BGM121A256V2R

Bluetooth 4.2 Module, 1.85V to 3.8V Supply, 200m Range, 1Mbps, -90dBm Sensitivity

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
Manufacturer: SILICON LABS
Product type: Bluetooth Modules & Adaptors
SVHC: To Be Advised
Interfaces: I2C, SPI, UART, USART
Product Range: Blue Gecko BGM121 Series
Certifications: CE, FCC, ISED, MIC
Bluetooth Class: -
Bluetooth Version: Bluetooth 4.2
Supply Voltage Range: 1.85 V to 3.8 V
Receiver Sensitivity Rx: -90 dBm
Operating Temperature Range: -40 °C to 85 °C
Delivery and price
Units per pack	250
Price	6.19 €
Current stock	10+
Lead time	30 days
Datasheet
## **BGM121/BGM123 Blue Gecko** _**Bluetooth**_ **[®] SiP Module Data Sheet** 

The BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module family is targeted for applications where ultra-small size, reliable high performance RF, low-power consumption and easy application development are key requirements. 

## **KEY FEATURES** 

- Bluetooth 4.2 low energy compliant 

At 6.5 x 6.5 x 1.4 mm the BGM121/BGM123 module fits applications where size is a constraint. BGM121/BGM123 also integrates a high performance, ultra robust antenna, which requires minimal PCB, plastic and metal clearance. The total PCB area required by BGM121/BGM123 is only 51 mm[2] . The BGM121/BGM123 has Bluetooth, CE, partial FCC, ISED Canada and Japan certifications. 

The BGM121/BGM123 also integrates a _Bluetooth_ 4.2 compliant Bluetooth stack and it can also run end-user applications on-board or alternatively used as a network co-processor over one of the host interfaces. 

BGM121/BGM123 SIP modules can be used in a wide variety of applications: 

- Wearables 

- IoT end devices and gateways 

   - Integrated antenna or RF pin 

   - TX power up to +8 dBm 

   - RX sensitivity: -90 dBm 

   - Range: up to 200 meters 

   - 32-bit ARM® Cortex®-M4 core at 38.4 MHz 

   - Flash memory: 256 kB 

   - RAM: 32 kB 

   - Autonomous Hardware Crypto Accelerator and Random Number Generator 

   - Integrated DC-DC Converter 

   - Onboard Bluetooth stack 

- Health, sports and wellness devices 

- Industrial, home and building automation 

- Smart phone, tablet and PC accessories 

- Beacons 

**==> picture [488 x 216] intentionally omitted <==**

**----- Start of picture text -----**<br>
Core / Memory Crystals Clock Management Energy Management Other<br>38.4MHz Crystal OscillatorHigh Frequency  High FrequencyRC Oscillator RegulatorVoltage  Voltage Monitor CRYPTO<br>ARM Cortex M4 processor Memory<br>with DSP extensions and FPU  Protection Unit 32.768kHz Low FrequencyRC Oscillator High Frequency RC OscillatorAuxiliary ConverterDC-DC  Power-On Reset CRC<br>Flash Program Memory RAM Memory Debug Interface DMA Controller Crystal OscillatorLow Frequency  RC OscillatorFrequency Ultra Low  Brown-Out Detector<br>32-bit bus<br>Peripheral Reflex System<br>Antenna Radio Transceiver Serial Interfaces I/O Ports Timers and Triggers Analog I/F<br>Chip antenna RFSENSE DEMOD USART InterruptsExternal  Timer/Counter Protocol Timer ADC<br>Matching LNA I PGA IFADC Low Energy UART General Purpose I/O Low energy timer Watchdog Timer ComparatorAnalog<br>RF Frontend<br>BALUN<br>PA AGC I [2] C Pin Reset Pulse Counter RTCC  IDAC<br>Q Frequency<br>Synthesizer<br>MOD Pin Wakeup Cryotimer<br>Lowest power mode with peripheral operational:<br>EM0—Active EM1—Sleep EM2—Deep Sleep EM3—Stop EM4—Hibernate EM4—Shutoff<br>FRC BUFC<br>CRC RAC<br>**----- End of picture text -----**<br>


**silabs.com** | Building a more connected world. 

Rev. 1.3 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Feature List 

## **1.  Feature List** 

The BGM121/BGM123 highlighted features are listed below. 

- **Low Power Wireless System-on-Chip** . 

   - High Performance 32-bit 38.4 MHz ARM Cortex[®] -M4 with DSP instruction and floating-point unit for efficient signal processing 

   - 256 kB flash program memory 

   - 32 kB RAM data memory 

   - 2.4 GHz radio operation 

   - TX power up to +8 dBm 

- **Low Energy Consumption** 

   - 8.7 mA RX current at 2.4 GHz 

   - 8.2 mA TX current @ 0 dBm output power at 2.4 GHz 

   - 63 μA/MHz in Active Mode (EM0) 

   - 2.5 μA EM2 DeepSleep current (full RAM retention and RTCC running from LFXO) 

   - 2.1 μA EM3 Stop current (State/RAM retention) 

   - Wake on Radio with signal strength detection, preamble pattern detection, frame detection and timeout 

- **High Receiver Performance** 

   - -90 dBm sensitivity @ 1 Mbit/s GFSK (2.4 GHz) 

- **Supported Protocols** 

   - Bluetooth[®] 

- **Support for Internet Security** 

   - General Purpose CRC 

   - Random Number Generator 

   - Hardware Cryptographic Acceleration for AES 128/256, SHA-1, SHA-2 (SHA-224 and SHA-256) and ECC 

- **Wide Selection of MCU peripherals** 

   - 12-bit 1 Msps SAR Analog to Digital Converter (ADC) 

   - 2 × Analog Comparator (ACMP) 

   - Digital to Analog Current Converter (IDAC) 

   - 32 pins connected to analog channels (APORT) shared between Analog Comparators, ADC, and IDAC 

   - 30 General Purpose I/O pins with output state retention and asynchronous interrupts 

   - 8 Channel DMA Controller 

   - 12 Channel Peripheral Reflex System (PRS) 

   - 2×16-bit Timer/Counter 

      - 3 + 4 Compare/Capture/PWM channels 

   - 32-bit Real Time Counter and Calendar 

   - 16-bit Low Energy Timer for waveform generation 

   - 32-bit Ultra Low Energy Timer/Counter for periodic wake-up from any Energy Mode 

   - 16-bit Pulse Counter with asynchronous operation 

   - Watchdog Timer with dedicated RC oscillator @ 50 nA 

   - 2×Universal Synchronous/Asynchronous Receiver/Transmitter (UART/SPI/SmartCard (ISO 7816)/IrDA/I[2] S) 

   - Low Energy UART (LEUART[™] ) 

   - I[2] C interface with SMBus support and address recognition in EM3 Stop 

- **Wide Operating Range** 

   - 1.85 V to 3.8 V single power supply 

   - 2.4 V to 3.8 V when using DC-DC 

   - Integrated DC-DC 

   - -40 °C to +85 °C 

- **Dimensions** 

   - 6.5 x 6.5 x 1.4 mm 

**silabs.com** | Building a more connected world. 

Rev. 1.3  |  2 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Ordering Information 

## **2.  Ordering Information** 

|**Ordering Code**|**Protocol Stack**|**Frequency**<br>**Band**|**Max TX**<br>**Power**<br>**(dBm)**|**Antenna**|**Flash**<br>**(KB)**|**RAM**<br>**(KB)**|**GPIO**|**Package**|
|---|---|---|---|---|---|---|---|---|
|BGM123A256V2R|Bluetooth Smart|2.4 GHz|+2|Built-in|256|32|30|1000 pcs<br>reel|
|BGM123A256V2|Bluetooth Smart|2.4 GHz|+2|Built-in|256|32|30|260 pcs<br>tray|
|BGM123N256V2R|Bluetooth Smart|2.4 GHz|+2|RF pin|256|32|30|1000 pcs<br>reel|
|BGM123N256V2|Bluetooth Smart|2.4 GHz|+2|RF pin|256|32|30|260 pcs<br>tray|
|BGM121A256V2R|Bluetooth Smart|2.4 GHz|+8|Built-in|256|32|30|1000 pcs<br>reel|
|BGM121A256V2|Bluetooth Smart|2.4 GHz|+8|Built-in|256|32|30|260 pcs<br>tray|
|BGM121N256V2R|Bluetooth Smart|2.4 GHz|+8|RF pin|256|32|30|1000 pcs<br>reel|
|BGM121N256V2|Bluetooth Smart|2.4 GHz|+8|RF pin|256|32|30|260 pcs<br>tray|
|SLWSTK6101C1|||||||||
|SLWRB4302A2|||||||||
|**Note:**<br>1. Blue Gecko Bluetooth Module Wireless Starter Kit (WSTK) with BGM121A256 radio board (SLWRB4302A) and BGM111A256<br>radio board (SLWRB4300A), expansion board and accessories.<br>2. BGM121A256 Radio Board|||||||||



**silabs.com** | Building a more connected world. 

Rev. 1.3  |  3 

## **Table of Contents** 

|**1.**|**Feature List .**<br>**.**<br>**.**<br>**.**<br>**.**<br>**.**<br>**.**<br>**.**<br>**.**<br>**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**. 2**|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|**2.**|**Ordering Information**<br>**.**<br>**.**<br>**.**<br>**.**<br>**.**<br>**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**. 3**|
|**3.**|**System Overview .**<br>**.**<br>**.**<br>**.**<br>**.**<br>**.**<br>**.**<br>**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**. 7**|
||3.1  Introduction.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|. 7|
||3.2  Radio.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|. 7|
||3.2.1  Antenna Interface<br>.<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|. 7|
||3.2.2  Wake on Radio<br>.<br>.<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|. 8|
||3.2.3  RFSENSE .<br>.<br>.<br>.<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|. 8|
||3.2.4  Packet and State Trace<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|. 8|
||3.2.5  Random Number Generator .|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|. 8|
||3.3  Power<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|. 9|
||3.3.1  Energy Management Unit (EMU)||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|. 9|
||3.3.2  DC-DC Converter<br>.<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|. 9|
||3.4  General Purpose Input/Output (GPIO).||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|. 9|
||3.5  Clocking.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.10|
||3.5.1  Clock Management Unit (CMU)|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.10|
||3.5.2  Internal Oscillators .<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.10|
||3.6  Counters/Timers and PWM<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.10|
||3.6.1  Timer/Counter (TIMER)<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.10|
||3.6.2  Real Time Counter and Calendar||(RTCC)|||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.10|
||3.6.3  Low Energy Timer (LETIMER)|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.10|
||3.6.4  Ultra Low Power Wake-up Timer (CRYOTIMER)|||||||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.10|
||3.6.5  Pulse Counter (PCNT) .<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.11|
||3.6.6  Watchdog Timer (WDOG) .<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.11|
||3.7  Communications and Other Digital Peripherals .|||||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.11|
||3.7.1  Universal Synchronous/Asynchronous Receiver/Transmitter (USART)||||||||||||||.|.|.|.|.|.|.|.|.11|
||3.7.2  Low Energy Universal Asynchronous Receiver/Transmitter (LEUART)||||||||||||||.|.|.|.|.|.|.|.|.11|
||3.7.3  Inter-Integrated Circuit Interface (I2C) .||||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.11|
||3.7.4  Peripheral Reflex System (PRS)||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.11|
||3.8  Security Features.<br>.<br>.<br>.<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.11|
||3.8.1  GPCRC (General Purpose Cyclic||Redundancy||||Check)|||.|.|.|.|.|.|.|.|.|.|.|.|.|.11|
||3.8.2  Crypto Accelerator (CRYPTO)|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.12|
||3.9  Analog<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.12|
||3.9.1  Analog Port (APORT) .<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.12|
||3.9.2  Analog Comparator (ACMP) .|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.12|
||3.9.3  Analog to Digital Converter (ADC) .|||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.12|
||3.9.4  Digital to Analog Current Converter (IDAC) .||||||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.12|
||3.10  Reset Management Unit (RMU)<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.12|
||3.11  Core and Memory .<br>.<br>.<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.12|
||3.11.1  Processor Core .<br>.<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.12|
||3.11.2  Memory System Controller (MSC)|||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.13|
||3.11.3  Linked Direct Memory Access Controller (LDMA)||||||||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.13|



**silabs.com** | Building a more connected world. 

Rev. 1.3 |  4 

||3.12  Memory Map .<br>.<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.14|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
||3.13  Configuration Summary .|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.15|
|**4.**|**Electrical Specifications**<br>**.**|**.**|**.**|**.**<br>**.**|**.**|**.**|**.**||**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**. 16**|
||4.1  Electrical Characteristics .|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.16|
||4.1.1  Absolute Maximum Ratings|||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.16|
||4.1.2  Operating Conditions|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.17|
||4.1.3  DC-DC Converter<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.18|
||4.1.4  Current Consumption|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.20|
||4.1.5  Wake up times<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.24|
||4.1.6  Brown Out Detector .|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.25|
||4.1.7  Frequency Synthesizer Characteristics|||||||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.25|
||4.1.8  2.4 GHz RF Transceiver||Characteristics|||||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.26|
||4.1.9  Oscillators .<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.29|
||4.1.10  Flash Memory Characteristics||||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.31|
||4.1.11  GPIO<br>.<br>.<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.32|
||4.1.12  VMON .<br>.<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.33|
||4.1.13  ADC<br>.<br>.<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.34|
||4.1.14  IDAC<br>.<br>.<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.37|
||4.1.15  Analog Comparator (ACMP)||||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.39|
||4.1.16  I2C .<br>.<br>.<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.41|
||4.1.17  USART SPI .<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.44|
|**5.**|**Typical Connection Diagrams**||**.**|**.**<br>**.**|**.**|**.**|**.**||**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**. 46**|
||5.1  Typical Connections.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.46|
|**6.**|**Layout Guidelines**<br>**.**<br>**.**<br>**.**|**.**|**.**|**.**<br>**.**||**.**<br>**.**||**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**. 47**|
||6.1  Layout Guidelines<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.47|
||6.2  Effect of PCB Width .<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.49|
||6.3  Effect of Plastic and Metal Materials||||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.49|
||6.4  Effect of Human Body .<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.49|
||6.5  2D Radiation Pattern Plots|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.50|
|**7.**|**Pin Definitions .**<br>**.**<br>**.**<br>**.**<br>**.**<br>**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**52**|
||7.1  Pin Definitions .<br>.<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.52|
||7.1.1  GPIO Overview<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.64|
||7.2  Alternate Functionality Pinout||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.65|
||7.3  Analog Port (APORT)<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.72|
|**8.**|**Package Specifications**<br>**.**|**.**|**.**|**.**<br>**.**||**.**<br>**.**||**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.80**|
||8.1  BGM121/BGM123 Package|Dimensions||||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.80|
||8.2   BGM121/BGM123 Package Marking||||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.82|
||8.3   BGM121/BGM123 Recommended PCB|||||Land||Pattern|||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.83|
|**9.**|**Tape and Reel Specifications**||**.**|**.**<br>**.**|**.**<br>**.**||**.**||**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**. 87**|
||9.1  Tape and Reel Packaging .|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.87|



**silabs.com** | Building a more connected world. 

Rev. 1.3 |  5 

||9.2  Reel and Tape Specifications|9.2  Reel and Tape Specifications|9.2  Reel and Tape Specifications|9.2  Reel and Tape Specifications|9.2  Reel and Tape Specifications|9.2  Reel and Tape Specifications|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.87|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
||9.3  Orientation and Tape Feed|||||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.89|
||9.4  Tape and Reel Box||Dimensions||||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.89|
||9.5  Moisture Sensitivity||Level||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.89|
|**10.**|**Soldering Recommendations **|||||**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**90**|
||10.1  Soldering Recommendations||||||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.90|
|**11.**|**Certifications .**<br>**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**91**|
||11.1  Bluetooth .<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.91|
||11.2  CE .<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.91|
||11.3  FCC.<br>.<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.92|
||11.4  ISED Canada|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.93|
||11.5  Japan .<br>.<br>.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.95|
||11.6  Approved Antenna Types|||||.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.95|
|**12.**|**Revision History.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**.**|**96**|
||12.1  Revision 1.3 .|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.96|
||12.2  Revision 1.2 .|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.96|
||12.3  Revision 1.1 .|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.96|
||12.4  Revision 1.0 .|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.96|
||12.5  Revision 0.85|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.96|
||12.6  Revision 0.84|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.96|
||12.7  Revision 0.83|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.96|
||12.8  Revision 0.82|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.96|
||12.9  Revision 0.81|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.|.97|
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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet System Overview 

## **3.  System Overview** 

## **3.1  Introduction** 

The BGM121/BGM123 product family combines an energy-friendly MCU with a highly integrated radio transceiver. The devices are well suited for any battery operated application, as well as other system requiring high performance and low-energy consumption. This section gives a short introduction to the full radio and MCU system. A detailed functional description can be found in the _EFR32BG1 Blue Gecko Bluetooth® Smart SoC Family Data Sheet_ (see general sections and QFN48 2.4 GHz SoC related sections). 

A detailed block diagram of the EFR32BG SoC is shown in the figure below which is used in the BGM121/BGM123 Bluetooth Smart module. 

**==> picture [499 x 341] intentionally omitted <==**

**----- Start of picture text -----**<br>
Radio Transciever Port I/O Configuration<br>DEMOD<br>RFSENSE RF Frontend Digital Peripherals<br>I PGA IFADC LETIMER IOVDD<br>LNA<br>2G4RF_IOP BALUN PA Frequency  AGC TIMER<br>2G4RF_ION Q Synthesizer CRYOTIMER<br>MOD Port A<br>PCNT Drivers PAn<br>RTC / RTCC<br>Port<br>Energy Management ARM Cortex-M4 Core USART Mapper<br>PAVDD Port B  PBn<br>Up to 256 KB ISP Flash LEUART Drivers<br>RFVDD Program Memory<br>I2C<br>IOVDD Up to 32 KB RAM<br>AVDD MonitorVoltage  Memory Protection Unit A A CRYPTO DriversPort C  PCn<br>DVDD Floating Point Unit HB PB CRC<br>bypass<br>DMA Controller<br>VREGVDD DC-DC  Voltage  Serial Wire Debug /  Analog Peripherals DriversPort D  PDn<br>VREGSW Converter Regulator Programming Internal<br>Reference IDAC<br>DECOUPLE<br>Watchdog Timer VDD VREF Port F  PFn<br>Drivers<br>VSS<br>VREGVSS Brown Out /  Clock Management VDD<br>RFVSS Power-On<br>PAVSS Reset ULFRCO 12-bit ADC<br>Reset  AUXHFRCO<br>RESETn Management Unit LFRCO Temp<br>HFRCO Sensor<br>HFXTAL_P LFXTAL_P / N HFXOLFXO +-<br>HFXTAL_N Analog Comparator<br>FRC BUFC<br>CRC RAC<br>APORT<br>Input MUX<br>**----- End of picture text -----**<br>


**Figure 3.1.  Detailed EFR32BG1 Block Diagram** 

## **3.2  Radio** 

The BGM121/BGM123 features a radio transceiver supporting Bluetooth[®] low energy protocol. 

## **3.2.1  Antenna Interface** 

BGM121/BGM123 has a built in 2.4GHz ceramic chip antenna or 50 ohm RF pin. 

**Table 3.1.  Antenna Efficiency and Peak Gain** 

|**Parameter**|**With optimal layout **|**Note**|
|---|---|---|
|Efficiency|-1 to -2 dB|Efficiency and peak gain depend on the application PCB layout<br>and mechanical design and the used antenna.|
|Peak gain|1 dBi||



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet System Overview 

## **3.2.2  Wake on Radio** 

The Wake on Radio feature allows flexible, autonomous RF sensing, qualification, and demodulation without required MCU activity, using a subsystem of the BGM121/BGM123 including the Radio Controller (RAC), Peripheral Reflex System (PRS), and Low Energy peripherals. 

## **3.2.3  RFSENSE** 

The RFSENSE module generates a system wakeup interrupt upon detection of wideband RF energy at the antenna interface, providing true RF wakeup capabilities from low energy modes including EM2, EM3 and EM4. 

RFSENSE triggers on a relatively strong RF signal and is available in the lowest energy modes, allowing exceptionally low energy consumption. RFSENSE does not demodulate or otherwise qualify the received signal, but software may respond to the wakeup event by enabling normal RF reception. 

Various strategies for optimizing power consumption and system response time in presence of false alarms may be employed using available timer peripherals. 

## **3.2.4  Packet and State Trace** 

The BGM121/BGM123 Frame Controller has a packet and state trace unit that provides valuable information during the development phase. It features: 

- Non-intrusive trace of transmit data, receive data and state information 

- Data observability on a single-pin UART data output, or on a two-pin SPI data output 

- Configurable data output bitrate / baudrate 

- Multiplexed transmitted data, received data and state / meta information in a single serial data stream 

## **3.2.5  Random Number Generator** 

The Frame Controller (FRC) implements a random number generator that uses entropy gathered from noise in the RF receive chain. The data is suitable for use in cryptographic applications. 

Output from the random number generator can be used either directly or as a seed or entropy source for software-based random number generator algorithms such as Fortuna. 

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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet System Overview 

## **3.3  Power** 

The BGM121/BGM123 has an Energy Management Unit (EMU) and efficient integrated regulators to generate internal supply voltages. Only a single external supply voltage is required, from which all internal voltages are created. An integrated dc-dc buck regulator is utilized to further reduce the current consumption. 

**Figure 3.2.  Power Supply Configuration** 

## **3.3.1  Energy Management Unit (EMU)** 

The Energy Management Unit manages transitions of energy modes in the device. Each energy mode defines which peripherals and features are available and the amount of current the device consumes. The EMU can also be used to turn off the power to unused RAM blocks, and it contains control registers for the dc-dc regulator and the Voltage Monitor (VMON). The VMON is used to monitor multiple supply voltages. It has multiple channels which can be programmed individually by the user to determine if a sensed supply has fallen below a chosen threshold. 

## **3.3.2  DC-DC Converter** 

The DC-DC buck converter covers a wide range of load currents and provides up to 90% efficiency in energy modes EM0, EM1, EM2 and EM3. Patented RF noise mitigation allows operation of the DC-DC converter without degrading sensitivity of radio components. Protection features include programmable current limiting, short-circuit protection, and dead-time protection. The DC-DC converter may also enter bypass mode when the input voltage is too low for efficient operation. In bypass mode, the DC-DC input supply is internally connected directly to its output through a low resistance switch. Bypass mode also supports in-rush current limiting to prevent input supply voltage droops due to excessive output current transients. 

## **3.4  General Purpose Input/Output (GPIO)** 

BGM121/BGM123 has up to 30 General Purpose Input/Output pins. Each GPIO pin can be individually configured as either an output or input. More advanced configurations including open-drain, open-source, and glitch-filtering can be configured for each individual GPIO pin. The GPIO pins can be overridden by peripheral connections, like SPI communication. Each peripheral connection can be routed to several GPIO pins on the device. The input value of a GPIO pin can be routed through the Peripheral Reflex System to other peripherals. The GPIO subsystem supports asynchronous external pin interrupts. 

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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet System Overview 

## **3.5  Clocking** 

## **3.5.1  Clock Management Unit (CMU)** 

The Clock Management Unit controls oscillators and clocks in the BGM121/BGM123. Individual enabling and disabling of clocks to all peripheral modules is perfomed by the CMU. The CMU also controls enabling and configuration of the oscillators. A high degree of flexibility allows software to optimize energy consumption in any specific application by minimizing power dissipation in unused peripherals and oscillators. 

## **3.5.2  Internal Oscillators** 

The BGM121/BGM123 fully integrates two crystal oscillators and four RC oscillators, listed below. 

- A 38.4MHz high frequency crystal oscillator (HFXO) provides a precise timing reference for the MCU and radio. 

- A 32.768 kHz crystal oscillator (LFXO) provides an accurate timing reference for low energy modes. 

- An integrated high frequency RC oscillator (HFRCO) is available for the MCU system, when crystal accuracy is not required. The HFRCO employs fast startup at minimal energy consumption combined with a wide frequency range. 

- An integrated auxilliary high frequency RC oscillator (AUXHFRCO) is available for timing the general-purpose ADC and the Serial Wire debug port with a wide frequency range. 

- An integrated low frequency 32.768 kHz RC oscillator (LFRCO) can be used as a timing reference in low energy modes, when crystal accuracy is not required. 

- An integrated ultra-low frequency 1 kHz RC oscillator (ULFRCO) is available to provide a timing reference at the lowest energy consumption in low energy modes. 

## **3.6  Counters/Timers and PWM** 

## **3.6.1  Timer/Counter (TIMER)** 

TIMER peripherals keep track of timing, count events, generate PWM outputs and trigger timed actions in other peripherals through the PRS system. The core of each TIMER is a 16-bit counter with up to 4 compare/capture channels. Each channel is configurable in one of three modes. In capture mode, the counter state is stored in a buffer at a selected input event. In compare mode, the channel output reflects the comparison of the counter to a programmed threshold value. In PWM mode, the TIMER supports generation of pulse-width modulation (PWM) outputs of arbitrary waveforms defined by the sequence of values written to the compare registers, with optional dead-time insertion available in timer unit TIMER_0 only. 

## **3.6.2  Real Time Counter and Calendar (RTCC)** 

The Real Time Counter and Calendar (RTCC) is a 32-bit counter providing timekeeping in all energy modes. The RTCC includes a Binary Coded Decimal (BCD) calendar mode for easy time and date keeping. The RTCC can be clocked by any of the on-board oscillators with the exception of the AUXHFRCO, and it is capable of providing system wake-up at user defined instances. When receiving frames, the RTCC value can be used for timestamping. The RTCC includes 128 bytes of general purpose data retention, allowing easy and convenient data storage in all energy modes. 

## **3.6.3  Low Energy Timer (LETIMER)** 

The unique LETIMER is a 16-bit timer that is available in energy mode EM2 Deep Sleep in addition to EM1 Sleep and EM0 Active. This allows it to be used for timing and output generation when most of the device is powered down, allowing simple tasks to be performed while the power consumption of the system is kept at an absolute minimum. The LETIMER can be used to output a variety of waveforms with minimal software intervention. The LETIMER is connected to the Real Time Counter and Calendar (RTCC), and can be configured to start counting on compare matches from the RTCC. 

## **3.6.4  Ultra Low Power Wake-up Timer (CRYOTIMER)** 

The CRYOTIMER is a 32-bit counter that is capable of running in all energy modes. It can be clocked by either the 32.768 kHz crystal oscillator (LFXO), the 32.768 kHz RC oscillator (LFRCO), or the 1 kHz RC oscillator (ULFRCO). It can provide periodic Wakeup events and PRS signals which can be used to wake up peripherals from any energy mode. The CRYOTIMER provides a wide range of interrupt periods, facilitating flexible ultra-low energy operation. 

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## **3.6.5  Pulse Counter (PCNT)** 

The Pulse Counter (PCNT) peripheral can be used for counting pulses on a single input or to decode quadrature encoded inputs. The clock for PCNT is selectable from either an external source on pin PCTNn_S0IN or from an internal timing reference, selectable from among any of the internal oscillators, except the AUXHFRCO. The module may operate in energy mode EM0 Active, EM1 Sleep, EM2 Deep Sleep, and EM3 Stop. 

## **3.6.6  Watchdog Timer (WDOG)** 

The watchdog timer can act both as an independent watchdog or as a watchdog synchronous with the CPU clock. It has windowed monitoring capabilities, and can generate a reset or different interrupts depending on the failure mode of the system. The watchdog can also monitor autonomous systems driven by PRS. 

## **3.7  Communications and Other Digital Peripherals** 

## **3.7.1  Universal Synchronous/Asynchronous Receiver/Transmitter (USART)** 

The Universal Synchronous/Asynchronous Receiver/Transmitter is a flexible serial I/O module. It supports full duplex asynchronous UART communication with hardware flow control as well as RS-485, SPI, MicroWire and 3-wire. It can also interface with devices supporting: 

- ISO7816 SmartCards 

- IrDA 

- I[2] S 

## **3.7.2  Low Energy Universal Asynchronous Receiver/Transmitter (LEUART)** 

The unique LEUART[TM] provides two-way UART communication on a strict power budget. Only a 32.768 kHz clock is needed to allow UART communication up to 9600 baud. The LEUART includes all necessary hardware to make asynchronous serial communication possible with a minimum of software intervention and energy consumption. 

## **3.7.3  Inter-Integrated Circuit Interface (I[2] C)** 

The I[2] C module provides an interface between the MCU and a serial I[2] C bus. It is capable of acting as both a master and a slave and supports multi-master buses. Standard-mode, fast-mode and fast-mode plus speeds are supported, allowing transmission rates from 10 kbit/s up to 1 Mbit/s. Slave arbitration and timeouts are also available, allowing implementation of an SMBus-compliant system. The interface provided to software by the I[2] C module allows precise timing control of the transmission process and highly automated transfers. Automatic recognition of slave addresses is provided in active and low energy modes. 

## **3.7.4  Peripheral Reflex System (PRS)** 

The Peripheral Reflex System provides a communication network between different peripheral modules without software involvement. Peripheral modules producing Reflex signals are called producers. The PRS routes Reflex signals from producers to consumer peripherals which in turn perform actions in response. Edge triggers and other functionality can be applied by the PRS. The PRS allows peripheral to act autonomously without waking the MCU core, saving power. 

## **3.8  Security Features** 

## **3.8.1  GPCRC (General Purpose Cyclic Redundancy Check)** 

The GPCRC module implements a Cyclic Redundancy Check (CRC) function. It supports both 32-bit and 16-bit polynomials. The supported 32-bit polynomial is 0x04C11DB7 (IEEE 802.3), while the 16-bit polynomial can be programmed to any value, depending on the needs of the application. 

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## **3.8.2  Crypto Accelerator (CRYPTO)** 

The Crypto Accelerator is a fast and energy-efficient autonomous hardware encryption and decryption accelerator. It supports AES encryption and decryption with 128- or 256-bit keys and ECC over both GF(P) and GF(2[m] ), SHA-1 and SHA-2 (SHA-224 and SHA-256). 

Supported modes of operation for AES include: ECB, CTR, CBC, PCBC, CFB, OFB, CBC-MAC, GMAC and CCM. 

Supported ECC NIST recommended curves include P-192, P-224, P-256, K-163, K-233, B-163 and B-233. 

The CRYPTO is tightly linked to the Radio Buffer Controller (BUFC) enabling fast and efficient autonomous cipher operations on data buffer content. It allows fast processing of GCM (AES), ECC and SHA with little CPU intervention. CRYPTO also provides trigger signals for DMA read and write operations. 

## **3.9  Analog** 

## **3.9.1  Analog Port (APORT)** 

The Analog Port (APORT) is an analog interconnect matrix allowing access to analog modules ADC, ACMP, and IDAC on a flexible selection of pins. Each APORT bus consists of analog switches connected to a common wire. Since many clients can operate differentially, buses are grouped by X/Y pairs. 

## **3.9.2  Analog Comparator (ACMP)** 

The Analog Comparator is used to compare the voltage of two analog inputs, with a digital output indicating which input voltage is higher. Inputs are selected from among internal references and external pins. The tradeoff between response time and current consumption is configurable by software. Two 6-bit reference dividers allow for a wide range of internally-programmable reference sources. The ACMP can also be used to monitor the supply voltage. An interrupt can be generated when the supply falls below or rises above the programmable threshold. 

## **3.9.3  Analog to Digital Converter (ADC)** 

The ADC is a Successive Approximation Register (SAR) architecture, with a resolution of up to 12 bits at up to 1 MSamples/s. The output sample resolution is configurable and additional resolution is possible using integrated hardware for averaging over multiple samples. The ADC includes integrated voltage references and an integrated temperature sensor. Inputs are selectable from a wide range of sources, including pins configurable as either single-ended or differential. 

## **3.9.4  Digital to Analog Current Converter (IDAC)** 

The Digital to Analog Current Converter can source or sink a configurable constant current. This current can be driven on an output pin or routed to the selected ADC input pin for capacitive sensing. The current is programmable between 0.05 µA and 64 µA with several ranges with various step sizes. 

## **3.10  Reset Management Unit (RMU)** 

The RMU is responsible for handling reset of the BGM121/BGM123. A wide range of reset sources are available, including several power supply monitors, pin reset, software controlled reset, core lockup reset and watchdog reset. 

## **3.11  Core and Memory** 

## **3.11.1  Processor Core** 

The ARM Cortex-M4F processor includes a 32-bit RISC processor integrating the following features and tasks in the system: 

- ARM Cortex-M4F RISC processor achieving 1.25 Dhrystone MIPS/MHz 

- Memory Protection Unit (MPU) supporting up to 8 memory segments 

- 256 KB flash program memory 

- 32 KB RAM data memory 

- Configuration and event handling of all modules 

- 2-pin Serial-Wire debug interface 

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## **3.11.2  Memory System Controller (MSC)** 

The Memory System Controller (MSC) is the program memory unit of the microcontroller. The flash memory is readable and writable from both the Cortex-M and DMA. The flash memory is divided into two blocks; the main block and the information block. Program code is normally written to the main block, whereas the information block is available for special user data and flash lock bits. There is also a read-only page in the information block containing system and device calibration data. Read and write operations are supported in energy modes EM0 Active and EM1 Sleep. 

## **3.11.3  Linked Direct Memory Access Controller (LDMA)** 

The Linked Direct Memory Access (LDMA) controller features 8 channels capable of performing memory operations independently of software. This reduces both energy consumption and software workload. The LDMA allows operations to be linked together and staged, enabling sophisticated operations to be implemented. 

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## **3.12  Memory Map** 

The BGM121/BGM123 memory map is shown in the figures below. 

**==> picture [576 x 433] intentionally omitted <==**

**Figure 3.3.  BGM121/BGM123 Memory Map — Core Peripherals and Code Space** 

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**==> picture [520 x 390] intentionally omitted <==**

**Figure 3.4.  BGM121/BGM123 Memory Map — Peripherals** 

## **3.13  Configuration Summary** 

The features of the BGM121/BGM123 are a subset of the feature set described in the device reference manual. The table below describes device specific implementation of the features. Remaining modules support full configuration. 

**Table 3.2.  Configuration Summary** 

|**Module**|**Configuration**|**Pin Connections**|
|---|---|---|
|USART0|IrDA SmartCard|US0_TX, US0_RX, US0_CLK, US0_CS|
|USART1|IrDA I2S SmartCard|US1_TX, US1_RX, US1_CLK, US1_CS|
|TIMER0|with DTI|TIM0_CC[2:0], TIM0_CDTI[2:0]|
|TIMER1||TIM1_CC[3:0]|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

## **4.  Electrical Specifications** 

## **4.1  Electrical Characteristics** 

All electrical parameters in all tables are specified under the following conditions, unless stated otherwise: 

- Typical values are based on TAMB=25 °C and VDD= 3.3 V, by production test and/or technology characterization. 

- Radio performance numbers are measured in conducted mode, based on Silicon Laboratories reference designs using output power-specific external RF impedance-matching networks for interfacing to a 50 Ω antenna. 

- Minimum and maximum values represent the worst conditions across supply voltage, process variation, and operating temperature, unless stated otherwise. 

Refer to Table 4.2 General Operating Conditions on page 17 for more details about operational supply and temperature limits. 

## **4.1.1  Absolute Maximum Ratings** 

Stresses above those listed below may cause permanent damage to the device. This is a stress rating only and functional operation of the devices at those or any other conditions above those indicated in the operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. For more information on the available quality and reliability data, see the Quality and Reliability Monitor Report at http://www.silabs.com/support/quality/pages/default.aspx. 

**Table 4.1.  Absolute Maximum Ratings** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Storage temperature range|TSTG||-40|—|+85|°C|
|External main supply voltage|VDDMAX||0|—|3.8|V|
|External main supply voltage<br>ramp rate|VDDRAMPMAX||—|—|1|V / μs|
|External main supply voltage<br>with DC-DC in bypass mode|||1.85||3.8|V|
|Voltage on any 5V tolerant<br>GPIO pin1|VDIGPIN||-0.3|—|Min of 5.25<br>and IOVDD<br>+2|V|
|Voltage on non-5V tolerant<br>GPIO pins|||-0.3|—|IOVDD+0.3|V|
|Max RF level at input|PRFMAX2G4||—|—|10|dBm|
|Total current into VDD power<br>lines (source)|IVDDMAX||—|—|200|mA|
|Total current into VSS<br>ground lines (sink)|IVSSMAX||—|—|200|mA|
|Current per I/O pin (sink)|IIOMAX||—|—|50|mA|
|Current per I/O pin (source)|||—|—|50|mA|
|Current for all I/O pins (sink)|IIOALLMAX||—|—|200|mA|
|Current for all I/O pins<br>(source)|||—|—|200|mA|
|Voltage difference between<br>AVDD and VREGVDD|ΔVDD||—|—|0.3|V|
|**Note:**<br>1. When a GPIO pin is routed to the analog module through the APORT, the maximum voltage = IOVDD.|||||||



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## **4.1.2  Operating Conditions** 

The following subsections define the operating conditions for the module. 

## **4.1.2.1  General Operating Conditions** 

## **Table 4.2.  General Operating Conditions** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Operating temperature<br>range|TOP|Ambient temperature range|-40|25|85|°C|
|VDD Operating supply volt-<br>age1|VVDD|DCDC in regulation|2.43|3.3|3.8|V|
|||DCDC in bypass, 50mA load|1.85|3.3|3.8|V|
|VDD Current|IVDD|DCDC in bypass|—|—|200|mA|
|HFCLK frequency|fCORE|0 wait-states (MODE = WS0)2|—|—|26|MHz|
|||1 wait-states (MODE = WS1)2|—|38.4|40|MHz|
|**Note:**<br>1. The minimum voltage required in bypass mode is calculated using RBYPfrom the DC-DC specification table. Requirements for<br>other loads can be calculated as VVDD_min+ILOAD* RBYP_max<br>2. In MSC_READCTRL register<br>3. The minimum voltage of 2.4 V for DCDC is specified at 100 mA|||||||



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## **4.1.3  DC-DC Converter** 

Test conditions: VDCDC_I=3.3 V, VDCDC_O=1.8 V, IDCDC_LOAD=50 mA, Heavy Drive configuration, FDCDC_LN=7 MHz, unless otherwise indicated. 

**Table 4.3.  DC-DC Converter** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Input voltage range|VDCDC_I|Bypass mode, IDCDC_LOAD= 50<br>mA|1.85|—|VVREGVDD_<br>MAX|V|
|||Low noise (LN) mode, 1.8 V out-<br>put, IDCDC_LOAD= 100 mA, or<br>Low power (LP) mode, 1.8 V out-<br>put, IDCDC_LOAD= 10 mA|2.4|—|VVREGVDD_<br>MAX|V|
|||Low noise (LN) mode, 1.8 V out-<br>put, IDCDC_LOAD= 200 mA|2.6|—|VVREGVDD_<br>MAX|V|
|Output voltage programma-<br>ble range1|VDCDC_O||1.8|—|VVREGVDD|V|
|Regulation DC Accuracy|ACCDC|Low noise (LN) mode, 1.8 V target<br>output|1.7|—|1.9|V|
|Regulation Window2|WINREG|Low power (LP) mode,<br>LPCMPBIAS3= 0, 1.8 V target<br>output, IDCDC_LOAD≤ 75 μA|1.63|—|2.2|V|
|||Low power (LP) mode,<br>LPCMPBIAS3= 3, 1.8 V target<br>output, IDCDC_LOAD≤ 10 mA|1.63|—|2.1|V|
|Steady-state output ripple|VR|Radio disabled.|—|3|—|mVpp|
|Output voltage under/over-<br>shoot|VOV|CCM Mode (LNFORCECCM3=<br>1), Load changes between 0 mA<br>and 100 mA|—|—|150|mV|
|||DCM Mode (LNFORCECCM3=<br>0), Load changes between 0 mA<br>and 10 mA|—|—|150|mV|
|||Overshoot during LP to LN<br>CCM/DCM mode transitions com-<br>pared to DC level in LN mode|—|200|—|mV|
|||Undershoot during BYP/LP to LN<br>CCM (LNFORCECCM3= 1) mode<br>transitions compared to DC level<br>in LN mode|—|50|—|mV|
|||Undershoot during BYP/LP to LN<br>DCM (LNFORCECCM3= 0) mode<br>transitions compared to DC level<br>in LN mode|—|125|—|mV|
|DC line regulation|VREG|Input changes between<br>VVREGVDD_MAXand 2.4 V|—|0.1|—|%|
|DC load regulation|IREG|Load changes between 0 mA and<br>100 mA in CCM mode|—|0.1|—|%|



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|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|**Note:**<br>1. Due to internal dropout, the DC-DC output will never be able to reach its input voltage, VVREGVDD<br>2. LP mode controller is a hysteretic controller that maintains the output voltage within the specified limits<br>3. In EMU_DCDCMISCCTRL register<br>4. Drive levels are defined by configuration of the PFETCNT and NFETCNT registers. Light Drive: PFETCNT=NFETCNT=3; Medi-<br>um Drive: PFETCNT=NFETCNT=7; Heavy Drive: PFETCNT=NFETCNT=15.|||||||



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Rev. 1.3  |  19 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

## **4.1.4  Current Consumption** 

## **4.1.4.1  Current Consumption 3.3 V (DC-DC in Bypass Mode)** 

Unless otherwise indicated, typical conditions are: VDD = 3.3 V. TOP = 25 °C. EMU_PWRCFG_PWRCG=NODCDC. EMU_DCDCCTRL_DCDCMODE=BYPASS. Minimum and maximum values in this table represent the worst conditions across supply voltage and process variation at TOP = 25 °C. 

**Table 4.4.  Current Consumption 3.3V without DC/DC** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Current consumption in EM0<br>Active mode with all periph-<br>erals disabled|IACTIVE|38.4 MHz crystal, CPU running<br>while loop from flash1|—|130|—|μA/MHz|
|||38 MHz HFRCO, CPU running<br>Prime from flash|—|88|—|μA/MHz|
|||38 MHz HFRCO, CPU running<br>while loop from flash|—|100|105|μA/MHz|
|||38 MHz HFRCO, CPU running<br>CoreMark from flash|—|112|—|μA/MHz|
|||26 MHz HFRCO, CPU running<br>while loop from flash|—|102|106|μA/MHz|
|||1 MHz HFRCO, CPU running<br>while loop from flash|—|222|350|μA/MHz|
|Current consumption in EM1<br>Sleep mode with all peripher-<br>als disabled|IEM1|38.4 MHz crystal1|—|65|—|μA/MHz|
|||38 MHz HFRCO|—|35|38|μA/MHz|
|||26 MHz HFRCO|—|37|41|μA/MHz|
|||1 MHz HFRCO|—|157|275|μA/MHz|
|Current consumption in EM2<br>Deep Sleep mode.|IEM2|Full RAM retention and RTCC<br>running from LFXO|—|3.3|—|μA|
|||4 kB RAM retention and RTCC<br>running from LFRCO|—|3|6.3|μA|
|Current consumption in EM3<br>Stop mode|IEM3|Full RAM retention and CRYO-<br>TIMER running from ULFRCO|—|2.8|6|μA|
|Current consumption in<br>EM4H Hibernate mode|IEM4|128 byte RAM retention, RTCC<br>running from LFXO|—|1.1|—|μA|
|||128 byte RAM retention, CRYO-<br>TIMER running from ULFRCO|—|0.65|—|μA|
|||128 byte RAM retention, no RTCC|—|0.65|1.3|μA|
|Current consumption in<br>EM4S Shutoff mode|IEM4S|no RAM retention, no RTCC|—|0.04|0.20|μA|
|**Note:**<br>1. CMU_HFXOCTRL_LOWPOWER=0|||||||



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

## **4.1.4.2  Current Consumption 3.3 V using DC-DC Converter** 

Unless otherwise indicated, typical conditions are: VDD = 3.3V. TOP = 25 °C. Minimum and maximum values in this table represent the worst conditions across supply voltage and process variation at TOP = 25 °C. 

**Table 4.5.  Current Consumption 3.3V with DC-DC** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Current consumption in EM0<br>Active mode with all periph-<br>erals disabled, DCDC in Low<br>Noise DCM mode1.|IACTIVE|38.4 MHz crystal, CPU running<br>while loop from flash2|—|88|—|μA/MHz|
|||38 MHz HFRCO, CPU running<br>Prime from flash|—|63|—|μA/MHz|
|||38 MHz HFRCO, CPU running<br>while loop from flash|—|71|—|μA/MHz|
|||38 MHz HFRCO, CPU running<br>CoreMark from flash|—|78|—|μA/MHz|
|||26 MHz HFRCO, CPU running<br>while loop from flash|—|76|—|μA/MHz|
|Current consumption in EM0<br>Active mode with all periph-<br>erals disabled, DCDC in Low<br>Noise CCM mode3.||38.4 MHz crystal, CPU running<br>while loop from flash2|—|98|—|μA/MHz|
|||38 MHz HFRCO, CPU running<br>Prime from flash|—|75|—|μA/MHz|
|||38 MHz HFRCO, CPU running<br>while loop from flash|—|81|—|μA/MHz|
|||38 MHz HFRCO, CPU running<br>CoreMark from flash|—|88|—|μA/MHz|
|||26 MHz HFRCO, CPU running<br>while loop from flash|—|94|—|μA/MHz|
|Current consumption in EM1<br>Sleep mode with all peripher-<br>als disabled, DCDC in Low<br>Noise DCM mode1.|IEM1|38.4 MHz crystal2|—|49|—|μA/MHz|
|||38 MHz HFRCO|—|32|—|μA/MHz|
|||26 MHz HFRCO|—|38|—|μA/MHz|
|Current consumption in EM1<br>Sleep mode with all peripher-<br>als disabled, DCDC in Low<br>Noise CCM mode3.||38.4 MHz crystal2|—|61|—|μA/MHz|
|||38 MHz HFRCO|—|45|—|μA/MHz|
|||26 MHz HFRCO|—|58|—|μA/MHz|
|Current consumption in EM2<br>Deep Sleep mode. DCDC in<br>Low Power mode4.|IEM2|Full RAM retention and RTCC<br>running from LFXO|—|2.5|—|μA|
|||4 kB RAM retention and RTCC<br>running from LFRCO|—|2.2|—|μA|
|Current consumption in EM3<br>Stop mode|IEM3|Full RAM retention and CRYO-<br>TIMER running from ULFRCO|—|2.1|—|μA|
|Current consumption in<br>EM4H Hibernate mode|IEM4|128 byte RAM retention, RTCC<br>running from LFXO|—|0.86|—|μA|
|||128 byte RAM retention, CRYO-<br>TIMER running from ULFRCO|—|0.58|—|μA|
|||128 byte RAM retention, no RTCC|—|0.58|—|μA|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Current consumption in<br>EM4S Shutoff mode|IEM4S|no RAM retention, no RTCC|—|0.04|—|μA|
|**Note:**<br>1. DCDC Low Noise DCM Mode = Light Drive (PFETCNT=NFETCNT=3), F=3.0 MHz (RCOBAND=0), ANASW=DVDD<br>2. CMU_HFXOCTRL_LOWPOWER=0<br>3. DCDC Low Noise CCM Mode = Light Drive (PFETCNT=NFETCNT=3), F=6.4 MHz (RCOBAND=4), ANASW=DVDD<br>4. DCDC Low Power Mode = Medium Drive (PFETCNT=NFETCNT=7), LPOSCDIV=1, LPBIAS=3, LPCILIMSEL=1, ANASW=DVDD|||||||



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

## **4.1.4.3  Current Consumption 1.85 V (DC-DC in Bypass Mode)** 

Unless otherwise indicated, typical conditions are: VDD = 1.85 V. TOP = 25 °C. DC-DC in bypass mode. Minimum and maximum values in this table represent the worst conditions across supply voltage and process variation at TOP = 25 °C. 

**Table 4.6.  Current Consumption 1.85V without DC/DC** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Current consumption in EM0<br>Active mode with all periph-<br>erals disabled|IACTIVE|38.4 MHz crystal, CPU running<br>while loop from flash1|—|131|—|μA/MHz|
|||38 MHz HFRCO, CPU running<br>Prime from flash|—|88|—|μA/MHz|
|||38 MHz HFRCO, CPU running<br>while loop from flash|—|100|—|μA/MHz|
|||38 MHz HFRCO, CPU running<br>CoreMark from flash|—|112|—|μA/MHz|
|||26 MHz HFRCO, CPU running<br>while loop from flash|—|102|—|μA/MHz|
|||1 MHz HFRCO, CPU running<br>while loop from flash|—|220|—|μA/MHz|
|Current consumption in EM1<br>Sleep mode with all peripher-<br>als disabled|IEM1|38.4 MHz crystal1|—|65|—|μA/MHz|
|||38 MHz HFRCO|—|35|—|μA/MHz|
|||26 MHz HFRCO|—|37|—|μA/MHz|
|||1 MHz HFRCO|—|154|—|μA/MHz|
|Current consumption in EM2<br>Deep Sleep mode|IEM2|Full RAM retention and RTCC<br>running from LFXO|—|3.2|—|μA|
|||4 kB RAM retention and RTCC<br>running from LFRCO|—|2.8|—|μA|
|Current consumption in EM3<br>Stop mode|IEM3|Full RAM retention and CRYO-<br>TIMER running from ULFRCO|—|2.7|—|μA|
|Current consumption in<br>EM4H Hibernate mode|IEM4|128 byte RAM retention, RTCC<br>running from LFXO|—|1|—|μA|
|||128 byte RAM retention, CRYO-<br>TIMER running from ULFRCO|—|0.62|—|μA|
|||128 byte RAM retention, no RTCC|—|0.62|—|μA|
|Current consumption in<br>EM4S Shutoff mode|IEM4S|No RAM retention, no RTCC|—|0.02|—|μA|
|**Note:**<br>1. CMU_HFXOCTRL_LOWPOWER=0|||||||



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Rev. 1.3  |  23 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

## **4.1.4.4  Current Consumption Using Radio** 

Unless otherwise indicated, typical conditions are: VDD = 3.3 V. TOP = 25 °C. DC-DC on. Minimum and maximum values in this table represent the worst conditions across supply voltage and process variation at TOP = 25 °C. 

**Table 4.7.  Current Consumption Using Radio 3.3 V with DC-DC** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Current consumption in re-<br>ceive mode, active packet<br>reception (MCU in EM1 @<br>38.4 MHz, peripheral clocks<br>disabled)|IRX|1 Mbit/s, 2GFSK, F = 2.4 GHz,<br>Radio clock prescaled by 4|—|9.0|—|mA|
|Current consumption in<br>transmit mode (MCU in EM1<br>@ 38.4 MHz, peripheral<br>clocks disabled)|ITX|F = 2.4 GHz, CW, 0 dBm output<br>power, Radio clock prescaled by 3|—|8.2|—|mA|
|||F = 2.4 GHz, CW, 2 dBm output<br>power|—|16.5|—|mA|
|||F = 2.4 GHz, CW, 8 dBm output<br>power|—|24.6|—|mA|
|RFSENSE current consump-<br>tion|IRFSENSE||—|51|—|nA|



## **4.1.5  Wake up times** 

**Table 4.8.  Wake up times** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Wake up from EM2 Deep<br>Sleep|tEM2_WU|Code execution from flash|—|10.7|—|μs|
|||Code execution from RAM|—|3|—|μs|
|Wakeup time from EM1<br>Sleep|tEM1_WU|Executing from flash|—|3|—|AHB<br>Clocks|
|||Executing from RAM|—|3|—|AHB<br>Clocks|
|Wake up from EM3 Stop|tEM3_WU|Executing from flash|—|10.7|—|μs|
|||Executing from RAM|—|3|—|μs|
|Wake up from EM4H Hiber-<br>nate1|tEM4H_WU|Executing from flash|—|60|—|μs|
|Wake up from EM4S Shut-<br>off1|tEM4S_WU||—|290|—|μs|
|**Note:**<br>1. Time from wakeup request until first instruction is executed. Wakeup results in device reset.|||||||



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Rev. 1.3  |  24 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

## **4.1.6  Brown Out Detector** 

For the table below, see Figure 3.2 Power Supply Configuration on page 9 on page 5 to see the relation between the modules external VDD pin and internal voltage supplies. The module itself has only one external power supply input (VDD). 

**Table 4.9.  Brown Out Detector** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|AVDD BOD threshold|VAVDDBOD|AVDD rising|—|—|1.85|V|
|||AVDD falling|1.62|—|—|V|
|AVDD BOD hysteresis|VAVDDBOD_HYST||—|21|—|mV|
|AVDD response time|tAVDDBOD_DELAY|Supply drops at 0.1V/μs rate|—|2.4|—|μs|
|EM4 BOD threshold|VEM4DBOD|AVDD rising|—|—|1.7|V|
|||AVDD falling|1.45|—|—|V|
|EM4 BOD hysteresis|VEM4BOD_HYST||—|46|—|mV|
|EM4 response time|tEM4BOD_DELAY|Supply drops at 0.1V/μs rate|—|300|—|μs|



## **4.1.7  Frequency Synthesizer Characteristics** 

**Table 4.10.  Frequency Synthesizer Characteristics** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|RF Synthesizer Frequency<br>range|FRANGE_2400|2.4 GHz frequency range|2400|—|2483.5|MHz|
|LO tuning frequency resolu-<br>tion with 38.4 MHz crystal|FRES_2400|2400 - 2483.5 MHz|—|—|73|Hz|
|Maximum frequency devia-<br>tion with 38.4 MHz crystal|ΔFMAX_2400||—|—|1677|kHz|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

## **4.1.8  2.4 GHz RF Transceiver Characteristics** 

## **4.1.8.1  RF Transmitter General Characteristics for the 2.4 GHz Band** 

Unless otherwise indicated, typical conditions are: TOP = 25 °C,VDD = 3.3 V, DC-DC on. Crystal frequency = 38.4 MHz. RF center frequency 2.45 GHz. Conducted measurement from the antenna feedpoint. 

**Table 4.11.  RF Transmitter General Characteristics for 2.4 GHz Band** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Maximum TX power +8dBm<br>rated parts|POUTMAX||—|+8|—|dBm|
|Maximum TX power +2dBm<br>rated parts|POUTMAX||—|+2|—||
|Minimum active TX Power|POUTMIN|CW||-26|—|dBm|
|Output power step size|POUTSTEP|-5 dBm < Output power < 0 dBm|—|1|—|dB|
|||0 dBm < output power <<br>POUTMAX|—|0.5|—|dB|
|Output power variation vs<br>supply at POUTMAX|POUTVAR_V|2.4 V < VVREGVDD< 3.3 V using<br>DC-DC converter|—|2.2|—|dB|
|Output power variation vs<br>temperature at POUTMAX|POUTVAR_T|From -40 to +85 °C, PAVDD con-<br>nected to DC-DC output|—|1.5|—|dB|
|Output power variation vs RF<br>frequency at POUTMAX|POUTVAR_F|Over RF tuning frequency range|—|0.4|—|dB|
|RF tuning frequency range|FRANGE||2400|—|2483.5|MHz|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

## **4.1.8.2  RF Receiver General Characteristics for the 2.4 GHz Band** 

Unless otherwise indicated, typical conditions are: TOP = 25 °C,VDD = 3.3 V, DC-DC on. Crystal frequency =38.4 MHz. RF center frequency 2.440 GHz. Conducted measurement from the antenna feedpoint. 

**Table 4.12.  RF Receiver General Characteristics for 2.4 GHz Band** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|RF tuning frequency range|FRANGE||2400|—|2483.5|MHz|
|Receive mode maximum<br>spurious emission|SPURRX|30 MHz to 1 GHz|—|-57|—|dBm|
|||1 GHz to 12 GHz|—|-47|—|dBm|
|Max spurious emissions dur-<br>ing active receive mode, per<br>FCC Part 15.109(a)|SPURRX_FCC|216 MHz to 960 MHz, Conducted<br>Measurement|—|-55.2|—|dBm|
|||Above 960 MHz, Conducted<br>Measurement|—|-47.2|—|dBm|
|Level above which<br>RFSENSE will trigger1|RFSENSETRIG|CW at 2.45 GHz|—|-24|—|dBm|
|Level below which<br>RFSENSE will not trigger1|RFSENSETHRES||—|-50|—|dBm|
|**Note:**<br>1. RFSENSE performance is only valid from 0||to 85 °C. RFSENSE should be disabled outside this temperature range.|||||



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

## **4.1.8.3  RF Receiver Characteristics for Bluetooth Smart in the 2.4 GHz Band** 

Unless otherwise indicated, typical conditions are: TOP = 25 °C,VDD = 3.3 V. Crystal frequency = 38.4 MHz. RF center frequency 2.440 GHz. DC-DC on. Conducted measurement from the antenna feedpoint. 

**Table 4.13.  RF Receiver Characteristics for Bluetooth Smart in the 2.4GHz Band** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Max usable receiver input<br>level, 0.1% BER|SAT|Signal is reference signal1. Packet<br>length is 20 bytes.|—|10|—|dBm|
|30.8% Packet Error Rate2|SENS|With non-ideal signals as speci-<br>fied in RF-PHY.TS.4.2.2, section<br>4.6.1|—|-90|—|dBm|
|Signal to co-channel interfer-<br>er, 0.1% BER|C/ICC|Desired signal 3 dB above refer-<br>ence sensitivity|—|8.3|—|dB|
|Blocking, 0.1% BER, Desired<br>is reference signal at -67<br>dBm. Interferer is CW in<br>OOB range.|BLOCKOOB|Interferer frequency 30 MHz ≤ f ≤<br>2000 MHz|—|-27|—|dBm|
|||Interferer frequency 2003 MHz ≤ f<br>≤ 2399 MHz|—|-32|—|dBm|
|||Interferer frequency 2484 MHz ≤ f<br>≤ 2997 MHz|—|-32|—|dBm|
|||Interferer frequency 3 GHz ≤ f ≤<br>12.75 GHz|—|-27|—|dBm|
|Intermodulation performance|IM|Per Core_4.1, Vol 6, Part A, Sec-<br>tion 4.4 with n = 3|—|-25.8|—|dBm|
|Upper limit of input power<br>range over which RSSI reso-<br>lution is maintained|RSSIMAX||4|—|—|dBm|
|Lower limit of input power<br>range over which RSSI reso-<br>lution is maintained|RSSIMIN||—|—|-101|dBm|
|RSSI resolution|RSSIRES|Over RSSIMINto RSSIMAX|—|—|0.5|dB|
|**Note:**<br>1. Reference signal is defined 2GFSK at -67 dBm, Modulation index = 0.5, BT = 0.5, Bit rate = 1 Mbps, desired data = PRBS9;<br>interferer data = PRBS15; frequency accuracy better than 1 ppm<br>2. Receive sensitivity on Bluetooth Smart channel 26 is -86 dBm|||||||



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

## **4.1.9  Oscillators** 

## **4.1.9.1  LFXO** 

## **Table 4.14.  LFXO** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Crystal frequency|fLFXO||—|32.768|—|kHz|
|Overall frequency tolerance<br>in all conditions1|||-100||100|ppm|
|**Note:**<br>1. XTAL nominal frequency tolerance = +/- 20 ppm|||||||



## **4.1.9.2  HFXO** 

## **Table 4.15.  HFXO** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Crystal frequency|fHFXO||-|38.4|-|MHz|
|Crystal frequency tolerance|||-40||40|ppm|



## **4.1.9.3  LFRCO** 

## **Table 4.16.  LFRCO** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Oscillation frequency|fLFRCO|ENVREF = 1 in<br>CMU_LFRCOCTRL|30.474|32.768|34.243|kHz|
|||ENVREF = 0 in<br>CMU_LFRCOCTRL|30.474|32.768|33.915|kHz|
|Startup time|tLFRCO||—|500|—|μs|
|Current consumption1|ILFRCO|ENVREF = 1 in<br>CMU_LFRCOCTRL|—|342|—|nA|
|||ENVREF = 0 in<br>CMU_LFRCOCTRL|—|494|—|nA|
|**Note:**<br>1. Block is supplied by AVDD if ANASW = 0, o||r DVDD if ANASW=1 in EMU_PWRCTRL register|||||



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

## **4.1.9.4  HFRCO and AUXHFRCO** 

**Table 4.17.  HFRCO and AUXHFRCO** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Frequency Accuracy|fHFRCO|Any frequency band, across sup-<br>ply voltage and temperature|-2.5|—|2.5|%|
|Start-up time|tHFRCO|fHFRCO≥ 19 MHz|—|300|—|ns|
|||4 < fHFRCO< 19 MHz|—|1|—|μs|
|||fHFRCO≤ 4 MHz|—|2.5|—|μs|
|Current consumption on all<br>supplies|IHFRCO|fHFRCO= 38 MHz|—|204|228|μA|
|||fHFRCO= 32 MHz|—|171|190|μA|
|||fHFRCO= 26 MHz|—|147|164|μA|
|||fHFRCO= 19 MHz|—|126|138|μA|
|||fHFRCO= 16 MHz|—|110|120|μA|
|||fHFRCO= 13 MHz|—|100|110|μA|
|||fHFRCO= 7 MHz|—|81|91|μA|
|||fHFRCO= 4 MHz|—|33|35|μA|
|||fHFRCO= 2 MHz|—|31|35|μA|
|||fHFRCO= 1 MHz|—|30|35|μA|
|Step size|SSHFRCO|Coarse (% of period)|—|0.8|—|%|
|||Fine (% of period)|—|0.1|—|%|
|Period Jitter|PJHFRCO||—|0.2|—|% RMS|



## **4.1.9.5  ULFRCO** 

**Table 4.18.  ULFRCO** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Oscillation frequency|fULFRCO||0.95|1|1.07|kHz|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

## **4.1.10  Flash Memory Characteristics** 

**Table 4.19.  Flash Memory Characteristics[1]** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Flash erase cycles before<br>failure|ECFLASH||10000|—|—|cycles|
|Flash data retention|RETFLASH||10|—|—|years|
|Word (32-bit) programming<br>time|tW_PROG||20|26|40|μs|
|Page erase time|tPERASE||20|27|40|ms|
|Mass erase time|tMERASE||20|27|40|ms|
|Device erase time2|tDERASE||—|60|74|ms|
|Page erase current3|IERASE||—|—|3|mA|
|Mass or Device erase cur-<br>rent3|||—|—|5|mA|
|Write current3|IWRITE||—|—|3|mA|
|**Note:**<br>1. Flash data retention information is published in the Quarterly Quality and Reliability Report.<br>2. Device erase is issued over the AAP interface and erases all flash, SRAM, the Lock Bit (LB) page, and the User data page Lock<br>Word (ULW)<br>3. Measured at 25°C|||||||



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

## **4.1.11  GPIO** 

For the table below, see Figure 3.2 Power Supply Configuration on page 9 on page 5 to see the relation between the modules external VDD pin and internal voltage supplies. The module itself has only one external power supply input (VDD). 

**Table 4.20.  GPIO** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Input low voltage|VIOIL||—|—|IOVDD*0.3|V|
|Input high voltage|VIOIH||IOVDD*0.7|—|—|V|
|Output high voltage relative<br>to IOVDD|VIOOH|Sourcing 3 mA, IOVDD ≥ 3 V,<br>DRIVESTRENGTH1= WEAK|IOVDD*0.8|—|—|V|
|||Sourcing 1.2 mA, IOVDD ≥ 1.62<br>V,<br>DRIVESTRENGTH1= WEAK|IOVDD*0.6|—|—|V|
|||Sourcing 20 mA, IOVDD ≥ 3 V,<br>DRIVESTRENGTH1= STRONG|IOVDD*0.8|—|—|V|
|||Sourcing 8 mA, IOVDD ≥ 1.62 V,<br>DRIVESTRENGTH1= STRONG|IOVDD*0.6|—|—|V|
|Output low voltage relative to<br>IOVDD|VIOOL|Sinking 3 mA, IOVDD ≥ 3 V,<br>DRIVESTRENGTH1= WEAK|—|—|IOVDD*0.2|V|
|||Sinking 1.2 mA, IOVDD ≥ 1.62 V,<br>DRIVESTRENGTH1= WEAK|—|—|IOVDD*0.4|V|
|||Sinking 20 mA, IOVDD ≥ 3 V,<br>DRIVESTRENGTH1= STRONG|—|—|IOVDD*0.2|V|
|||Sinking 8 mA, IOVDD ≥ 1.62 V,<br>DRIVESTRENGTH1= STRONG|—|—|IOVDD*0.4|V|
|Input leakage current|IIOLEAK|All GPIO except LFXO pins, GPIO<br>≤ IOVDD|—|0.1|30|nA|
|||LFXO Pins, GPIO ≤ IOVDD|—|0.1|50|nA|
|Input leakage current on<br>5VTOL pads above IOVDD|I5VTOLLEAK|IOVDD < GPIO ≤ IOVDD + 2 V|—|3.3|15|μA|
|I/O pin pull-up resistor|RPU||30|43|65|kΩ|
|I/O pin pull-down resistor|RPD||30|43|65|kΩ|
|Pulse width of pulses re-<br>moved by the glitch suppres-<br>sion filter|tIOGLITCH||20|25|35|ns|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Output fall time, From 70%<br>to 30% of VIO|tIOOF|CL= 50 pF,<br>DRIVESTRENGTH1= STRONG,<br>SLEWRATE1= 0x6|—|1.8|—|ns|
|||CL= 50 pF,<br>DRIVESTRENGTH1= WEAK,<br>SLEWRATE1= 0x6|—|4.5|—|ns|
|Output rise time, From 30%<br>to 70% of VIO|tIOOR|CL= 50 pF,<br>DRIVESTRENGTH1= STRONG,<br>SLEWRATE = 0x61|—|2.2|—|ns|
|||CL= 50 pF,<br>DRIVESTRENGTH1= WEAK,<br>SLEWRATE1= 0x6|—|7.4|—|ns|
|**Note:**<br>1. In GPIO_Pn_CTRL register|||||||



## **4.1.12  VMON** 

## **Table 4.21.  VMON** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|VMON Supply Current|IVMON|In EM0 or EM1, 1 supply moni-<br>tored|—|5.8|8.26|μA|
|||In EM0 or EM1, 4 supplies moni-<br>tored|—|11.8|16.8|μA|
|||In EM2, EM3 or EM4, 1 supply<br>monitored|—|62|—|nA|
|||In EM2, EM3 or EM4, 4 supplies<br>monitored|—|99|—|nA|
|VMON Loading of Monitored<br>Supply|ISENSE|In EM0 or EM1|—|2|—|μA|
|||In EM2, EM3 or EM4|—|2|—|nA|
|Threshold range|VVMON_RANGE||1.62|—|3.4|V|
|Threshold step size|NVMON_STESP|Coarse|—|200|—|mV|
|||Fine|—|20|—|mV|
|Response time|tVMON_RES|Supply drops at 1V/μs rate|—|460|—|ns|
|Hysteresis|VVMON_HYST||—|26|—|mV|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

## **4.1.13  ADC** 

For the table below, see Figure 3.2 Power Supply Configuration on page 9 to see the relation between the modules external VDD pin and internal voltage supplies. The module itself has only one external power supply input (VDD). 

**Table 4.22.  ADC** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Resolution|VRESOLUTION||6|—|12|Bits|
|Input voltage range|VADCIN|Single ended|0|—|2*VREF|V|
|||Differential|-VREF|—|VREF|V|
|Input range of external refer-<br>ence voltage, single ended<br>and differential|VADCREFIN_P||1|—|VAVDD|V|
|Power supply rejection1|PSRRADC|At DC|—|80|—|dB|
|Analog input common mode<br>rejection ratio|CMRRADC|At DC|—|80|—|dB|
|Current from all supplies, us-<br>ing internal reference buffer.<br>Continous operation. WAR-<br>MUPMODE2= KEEPADC-<br>WARM|IADC_CONTI-<br>NOUS_LP|1 Msps / 16 MHz ADCCLK,<br>BIASPROG = 0, GPBIASACC = 1<br>3|—|301|350|μA|
|||250 ksps / 4 MHz ADCCLK, BIA-<br>SPROG = 6, GPBIASACC = 13|—|149|—|μA|
|||62.5 ksps / 1 MHz ADCCLK,<br>BIASPROG = 15, GPBIASACC =<br>13|—|91|—|μA|
|Current from all supplies, us-<br>ing internal reference buffer.<br>Duty-cycled operation. WAR-<br>MUPMODE2= NORMAL|IADC_NORMAL_LP|35 ksps / 16 MHz ADCCLK,<br>BIASPROG = 0, GPBIASACC = 1<br>3|—|51|—|μA|
|||5 ksps / 16 MHz ADCCLK<br>BIASPROG = 0, GPBIASACC = 1<br>3|—|9|—|μA|
|Current from all supplies, us-<br>ing internal reference buffer.<br>Duty-cycled operation.<br>AWARMUPMODE2= KEEP-<br>INSTANDBY or KEEPIN-<br>SLOWACC|IADC_STAND-<br>BY_LP|125 ksps / 16 MHz ADCCLK,<br>BIASPROG = 0, GPBIASACC = 1<br>3|—|117|—|μA|
|||35 ksps / 16 MHz ADCCLK,<br>BIASPROG = 0, GPBIASACC = 1<br>3|—|79|—|μA|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Current from all supplies, us-<br>ing internal reference buffer.<br>Continous operation. WAR-<br>MUPMODE2= KEEPADC-<br>WARM|IADC_CONTI-<br>NOUS_HP|1 Msps / 16 MHz ADCCLK,<br>BIASPROG = 0, GPBIASACC = 0<br>3|—|345|—|μA|
|||250 ksps / 4 MHz ADCCLK, BIA-<br>SPROG = 6, GPBIASACC = 03|—|191|—|μA|
|||62.5 ksps / 1 MHz ADCCLK,<br>BIASPROG = 15, GPBIASACC =<br>03|—|132|—|μA|
|Current from all supplies, us-<br>ing internal reference buffer.<br>Duty-cycled operation. WAR-<br>MUPMODE2= NORMAL|IADC_NORMAL_HP|35 ksps / 16 MHz ADCCLK,<br>BIASPROG = 0, GPBIASACC = 0<br>3|—|102|—|μA|
|||5 ksps / 16 MHz ADCCLK<br>BIASPROG = 0, GPBIASACC = 0<br>3|—|17|—|μA|
|Current from all supplies, us-<br>ing internal reference buffer.<br>Duty-cycled operation.<br>AWARMUPMODE2= KEEP-<br>INSTANDBY or KEEPIN-<br>SLOWACC|IADC_STAND-<br>BY_HP|125 ksps / 16 MHz ADCCLK,<br>BIASPROG = 0, GPBIASACC = 0<br>3|—|162|—|μA|
|||35 ksps / 16 MHz ADCCLK,<br>BIASPROG = 0, GPBIASACC = 0<br>3|—|123|—|μA|
|Current from HFPERCLK|IADC_CLK|HFPERCLK = 16 MHz|—|140|—|μA|
|ADC Clock Frequency|fADCCLK||—|—|16|MHz|
|Throughput rate|fADCRATE||—|—|1|Msps|
|Conversion time4|tADCCONV|6 bit|—|7|—|cycles|
|||8 bit|—|9|—|cycles|
|||12 bit|—|13|—|cycles|
|Startup time of reference<br>generator and ADC core|tADCSTART|WARMUPMODE2= NORMAL|—|—|5|μs|
|||WARMUPMODE2= KEEPIN-<br>STANDBY|—|—|2|μs|
|||WARMUPMODE2= KEEPINSLO-<br>WACC|—|—|1|μs|
|SNDR at 1Msps and fin=<br>10kHz|SNDRADC|Internal reference, 2.5 V full-scale,<br>differential (-1.25, 1.25)|58|67|—|dB|
|||vrefp_in = 1.25 V direct mode with<br>2.5 V full-scale, differential|—|68|—|dB|
|Spurious-Free Dynamic<br>Range (SFDR)|SFDRADC|1 MSamples/s, 10 kHz full-scale<br>sine wave|—|75|—|dB|
|Input referred ADC noise,<br>rms|VREF_NOISE|Including quantization noise and<br>distortion|—|380|—|μV|
|Offset Error|VADCOFFSETERR||-3|0.25|3|LSB|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Gain error in ADC|VADC_GAIN|Using internal reference|—|-0.2|5|%|
|||Using external reference|—|-1|—|%|
|Differential non-linearity<br>(DNL)|DNLADC|12 bit resolution|-1|—|2|LSB|
|Integral non-linearity (INL),<br>End point method|INLADC|12 bit resolution|-6|—|6|LSB|
|Temperature Sensor Slope|VTS_SLOPE||—|-1.84|—|mV/°C|
|**Note:**<br>1. PSRR is referenced to AVDD when ANASW=0 and to DVDD when ANASW=1 in EMU_PWRCTRL<br>2. In ADCn_CNTL register<br>3. In ADCn_BIASPROG register<br>4. Derived from ADCCLK|||||||



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Rev. 1.3  |  36 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

## **4.1.14  IDAC** 

For the table below, see Figure 3.2 Power Supply Configuration on page 9 on page 5 to see the relation between the modules external VDD pin and internal voltage supplies. The module itself has only one external power supply input (VDD). 

**Table 4.23.  IDAC** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Number of Ranges|NIDAC_RANGES||—|4|—|-|
|Output Current|IIDAC_OUT|RANGSEL1= RANGE0|0.05|—|1.6|μA|
|||RANGSEL1= RANGE1|1.6|—|4.7|μA|
|||RANGSEL1= RANGE2|0.5|—|16|μA|
|||RANGSEL1= RANGE3|2|—|64|μA|
|Linear steps within each<br>range|NIDAC_STEPS||—|32|—||
|Step size|SSIDAC|RANGSEL1= RANGE0|—|50|—|nA|
|||RANGSEL1= RANGE1|—|100|—|nA|
|||RANGSEL1= RANGE2|—|500|—|nA|
|||RANGSEL1= RANGE3|—|2|—|μA|
|Total Accuracy, STEPSEL1=<br>0x10|ACCIDAC|EM0 or EM1, AVDD=3.3 V, T = 25<br>°C|-2|—|2|%|
|||EM0 or EM1|-18|—|22|%|
|||EM2 or EM3, Source mode,<br>RANGSEL1= RANGE0,<br>AVDD=3.3 V, T = 25 °C|—|-2|—|%|
|||EM2 or EM3, Source mode,<br>RANGSEL1= RANGE1,<br>AVDD=3.3 V, T = 25 °C|—|-1.7|—|%|
|||EM2 or EM3, Source mode,<br>RANGSEL1= RANGE2,<br>AVDD=3.3 V, T = 25 °C|—|-0.8|—|%|
|||EM2 or EM3, Source mode,<br>RANGSEL1= RANGE3,<br>AVDD=3.3 V, T = 25 °C|—|-0.5|—|%|
|||EM2 or EM3, Sink mode, RANG-<br>SEL1= RANGE0, AVDD=3.3 V, T<br>= 25 °C|—|-0.7|—|%|
|||EM2 or EM3, Sink mode, RANG-<br>SEL1= RANGE1, AVDD=3.3 V, T<br>= 25 °C|—|-0.6|—|%|
|||EM2 or EM3, Sink mode, RANG-<br>SEL1= RANGE2, AVDD=3.3 V, T<br>= 25 °C|—|-0.5|—|%|
|||EM2 or EM3, Sink mode, RANG-<br>SEL1= RANGE3, AVDD=3.3 V, T<br>= 25 °C|—|-0.5|—|%|



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Rev. 1.3  |  37 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet 

Electrical Specifications 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Start up time|tIDAC_SU|Output within 1% of steady state<br>value|—|5|—|μs|
|Settling time, (output settled<br>within 1% of steady state val-<br>ue)|tIDAC_SETTLE|Range setting is changed|—|5|—|μs|
|||Step value is changed|—|1|—|μs|
|Current consumption in EM0<br>or EM12|IIDAC|Source mode, excluding output<br>current|—|8.9|13|μA|
|||Sink mode, excluding output cur-<br>rent|—|12|16|μA|
|Current consumption in EM2<br>or EM32||Source mode, excluding output<br>current, duty cycle mode, T = 25<br>°C|—|1.04|—|μA|
|||Sink mode, excluding output cur-<br>rent, duty cycle mode, T = 25 °C|—|1.08|—|μA|
|||Source mode, excluding output<br>current, duty cycle mode, T ≥ 85<br>°C|—|8.9|—|μA|
|||Sink mode, excluding output cur-<br>rent, duty cycle mode, T ≥ 85 °C|—|12|—|μA|
|Output voltage compliance in<br>source mode, source current<br>change relative to current<br>sourced at 0 V|ICOMP_SRC|RANGESEL1=0, output voltage =<br>min(VIOVDD, VAVDD2-100 mv)|—|0.04|—|%|
|||RANGESEL1=1, output voltage =<br>min(VIOVDD, VAVDD2-100 mV)|—|0.02|—|%|
|||RANGESEL1=2, output voltage =<br>min(VIOVDD, VAVDD2-150 mV)|—|0.02|—|%|
|||RANGESEL1=3, output voltage =<br>min(VIOVDD, VAVDD2-250 mV)|—|0.02|—|%|
|Output voltage compliance in<br>sink mode, sink current<br>change relative to current<br>sunk at IOVDD|ICOMP_SINK|RANGESEL1=0, output voltage =<br>100 mV|—|0.18|—|%|
|||RANGESEL1=1, output voltage =<br>100 mV|—|0.12|—|%|
|||RANGESEL1=2, output voltage =<br>150 mV|—|0.08|—|%|
|||RANGESEL1=3, output voltage =<br>250 mV|—|0.02|—|%|
|**Note:**<br>1. In IDAC_CURPROG register<br>2. The IDAC is supplied by either AVDD, DVDD, or IOVDD based on the setting of ANASW in the EMU_PWRCTRL register and<br>PWRSEL in the IDAC_CTRL register. Setting PWRSEL to 1 selects IOVDD. With PWRSEL cleared to 0, ANASW selects be-<br>tween AVDD (0) and DVDD (1).|||||||



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

## **4.1.15  Analog Comparator (ACMP)** 

**Table 4.24.  ACMP** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Input voltage range|VACMPIN|ACMPVDD =<br>ACMPn_CTRL_PWRSEL1|0|—|VACMPVDD|V|
|Supply Voltage|VACMPVDD|BIASPROG2≤ 0x10 or FULL-<br>BIAS2= 0|1.85|—|VVREGVDD_<br>MAX|V|
|||0x10 < BIASPROG2≤ 0x20 and<br>FULLBIAS2= 1|2.1|—|VVREGVDD_<br>MAX|V|
|Active current not including<br>voltage reference|IACMP|BIASPROG2= 1, FULLBIAS2= 0|—|50|—|nA|
|||BIASPROG2= 0x10, FULLBIAS2<br>= 0|—|306|—|nA|
|||BIASPROG2= 0x20, FULLBIAS2<br>= 1|—|74|95|μA|
|Current consumption of inter-<br>nal voltage reference|IACMPREF|VLP selected as input using 2.5 V<br>Reference / 4 (0.625 V)|—|50|—|nA|
|||VLP selected as input using VDD|—|20|—|nA|
|||VBDIV selected as input using<br>1.25 V reference / 1|—|4.1|—|μA|
|||VADIV selected as input using<br>VDD/1|—|2.4|—|μA|
|Hysteresis (VCM= 1.25 V,<br>BIASPROG2= 0x10, FULL-<br>BIAS2= 1)|VACMPHYST|HYSTSEL3= HYST0|-1.75|0|1.75|mV|
|||HYSTSEL3= HYST1|10|18|26|mV|
|||HYSTSEL3= HYST2|21|32|46|mV|
|||HYSTSEL3= HYST3|27|44|63|mV|
|||HYSTSEL3= HYST4|32|55|80|mV|
|||HYSTSEL3= HYST5|38|65|100|mV|
|||HYSTSEL3= HYST6|43|77|121|mV|
|||HYSTSEL3= HYST7|47|86|148|mV|
|||HYSTSEL3= HYST8|-4|0|4|mV|
|||HYSTSEL3= HYST9|-27|-18|-10|mV|
|||HYSTSEL3= HYST10|-47|-32|-18|mV|
|||HYSTSEL3= HYST11|-64|-43|-27|mV|
|||HYSTSEL3= HYST12|-78|-54|-32|mV|
|||HYSTSEL3= HYST13|-93|-64|-37|mV|
|||HYSTSEL3= HYST14|-113|-74|-42|mV|
|||HYSTSEL3= HYST15|-135|-85|-47|mV|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet 

Electrical Specifications 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|Comparator delay4|tACMPDELAY|BIASPROG2= 1, FULLBIAS2= 0|—|30|—|μs|
|||BIASPROG2= 0x10, FULLBIAS2<br>= 0|—|3.7|—|μs|
|||BIASPROG2= 0x20, FULLBIAS2<br>= 1|—|35|—|ns|
|Offset voltage|VACMPOFFSET|BIASPROG2=0x10, FULLBIAS2<br>= 1|-35|—|35|mV|
|Reference Voltage|VACMPREF|Internal 1.25 V reference|1|1.25|1.47|V|
|||Internal 2.5 V reference|2|2.5|2.8|V|
|Capacitive Sense Internal<br>Resistance|RCSRES|CSRESSEL5= 0|—|inf|—|kΩ|
|||CSRESSEL5= 1|—|15|—|kΩ|
|||CSRESSEL5= 2|—|27|—|kΩ|
|||CSRESSEL5= 3|—|39|—|kΩ|
|||CSRESSEL5= 4|—|51|—|kΩ|
|||CSRESSEL5= 5|—|102|—|kΩ|
|||CSRESSEL5= 6|—|164|—|kΩ|
|||CSRESSEL5= 7|—|239|—|kΩ|
|**Note:**<br>1. ACMPVDD is a supply chosen by the setting in ACMPn_CTRL_PWRSEL and may be IOVDD, AVDD or DVDD<br>2. In ACMPn_CTRL register<br>3. In ACMPn_HYSTERESIS register<br>4. ±100 mV differential drive<br>5. In ACMPn_INPUTSEL register|||||||



The total ACMP current is the sum of the contributions from the ACMP and its internal voltage reference as given as: 

## **IACMPTOTAL = IACMP + IACMPREF** 

**IACMPREF** is zero if an external voltage reference is used. 

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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

## **4.1.16  I2C** 

## **I2C Standard-mode (Sm)** 

## **Table 4.25.  I2C Standard-mode (Sm)[1]** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|SCL clock frequency2|fSCL||0|—|100|kHz|
|SCL clock low time|tLOW||4.7|—|—|μs|
|SCL clock high time|tHIGH||4|—|—|μs|
|SDA set-up time|tSU,DAT||250|—|—|ns|
|SDA hold time3|tHD,DAT||100|—|3450|ns|
|Repeated START condition<br>set-up time|tSU,STA||4.7|—|—|μs|
|(Repeated) START condition<br>hold time|tHD,STA||4|—|—|μs|
|STOP condition set-up time|tSU,STO||4|—|—|μs|
|Bus free time between a<br>STOP and START condition|tBUF||4.7|—|—|μs|
|**Note:**<br>1. For CLHR set to 0 in the I2Cn_CTRL register<br>2. For the minimum HFPERCLK frequency required in Standard-mode, refer to the I2C chapter in the reference manual<br>3. The maximum SDA hold time (tHD,DAT) needs to be met only when the device does not stretch the low time of SCL (tLOW)|||||||



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

## **I2C Fast-mode (Fm)** 

**Table 4.26.  I2C Fast-mode (Fm)[1]** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|SCL clock frequency2|fSCL||0|—|400|kHz|
|SCL clock low time|tLOW||1.3|—|—|μs|
|SCL clock high time|tHIGH||0.6|—|—|μs|
|SDA set-up time|tSU,DAT||100|—|—|ns|
|SDA hold time3|tHD,DAT||100|—|900|ns|
|Repeated START condition<br>set-up time|tSU,STA||0.6|—|—|μs|
|(Repeated) START condition<br>hold time|tHD,STA||0.6|—|—|μs|
|STOP condition set-up time|tSU,STO||0.6|—|—|μs|
|Bus free time between a<br>STOP and START condition|tBUF||1.3|—|—|μs|
|**Note:**<br>1. For CLHR set to 1 in the I2Cn_CTRL register<br>2. For the minimum HFPERCLK frequency required in Fast-mode, refer to the I2C chapter in the reference manual<br>3. The maximum SDA hold time (tHD,DAT) needs to be met only when the device does not stretch the low time of SCL (tLOW)|||||||



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

## **I2C Fast-mode Plus (Fm+)** 

**Table 4.27.  I2C Fast-mode Plus (Fm+)[1]** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|SCL clock frequency2|fSCL||0|—|1000|kHz|
|SCL clock low time|tLOW||0.5|—|—|μs|
|SCL clock high time|tHIGH||0.26|—|—|μs|
|SDA set-up time|tSU,DAT||50|—|—|ns|
|SDA hold time|tHD,DAT||100|—|—|ns|
|Repeated START condition<br>set-up time|tSU,STA||0.26|—|—|μs|
|(Repeated) START condition<br>hold time|tHD,STA||0.26|—|—|μs|
|STOP condition set-up time|tSU,STO||0.26|—|—|μs|
|Bus free time between a<br>STOP and START condition|tBUF||0.5|—|—|μs|
|**Note:**<br>1. For CLHR set to 0 or 1 in the I2Cn_CTRL register<br>2. For the minimum HFPERCLK frequency required in Fast-mode Plus, refer to the I2C chapter in the reference manual|||||||



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Rev. 1.3  |  43 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

## **4.1.17  USART SPI** 

## **SPI Master Timing** 

## **Table 4.28.  SPI Master Timing** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|SCLK period1 2|tSCLK||2 *<br>tHFPERCLK|—|—|ns|
|CS to MOSI1 2|tCS_MO||0|—|8|ns|
|SCLK to MOSI1 2|tSCLK_MO||3|—|20|ns|
|MISO setup time1 2|tSU_MI|IOVDD = 1.62 V|56|—|—|ns|
|||IOVDD = 3.0 V|37|—|—|ns|
|MISO hold time1 2|tH_MI||6|—|—|ns|
|**Note:**<br>1. Applies for both CLKPHA = 0 and CLKPHA = 1 (figure only shows CLKPHA = 0)<br>2. Measurement done with 8 pF output loading at 10% and 90% of VDD(figure shows 50% of VDD)|||||||



**==> picture [211 x 129] intentionally omitted <==**

**----- Start of picture text -----**<br>
CS tCS_MO<br>tSCKL_MO<br>SCLK<br>CLKPOL = 0<br>tSCLK<br>SCLK<br>CLKPOL = 1<br>MOSI<br>tSU_MI tH_MI<br>MISO<br>**----- End of picture text -----**<br>


**Figure 4.1.  SPI Master Timing Diagram** 

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Rev. 1.3  |  44 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Electrical Specifications 

## **SPI Slave Timing** 

## **Table 4.29.  SPI Slave Timing** 

|**Parameter**|**Symbol**|**Test Condition**|**Min**|**Typ**|**Max**|**Unit**|
|---|---|---|---|---|---|---|
|SCKL period1 2|tSCLK_sl||2 *<br>tHFPERCLK|—|—|ns|
|SCLK high period1 2|tSCLK_hi||3 *<br>tHFPERCLK|—|—|ns|
|SCLK low period1,2|tSCLK_lo||3 *<br>tHFPERCLK|—|—|ns|
|CS active to MISO1 2|tCS_ACT_MI||4|—|50|ns|
|CS disable to MISO1 2|tCS_DIS_MI||4|—|50|ns|
|MOSI setup time1 2|tSU_MO||4|—|—|ns|
|MOSI hold time1 2|tH_MO||3 + 2 *<br>tHFPERCLK|—|—|ns|
|SCLK to MISO1 2|tSCLK_MI||16 +<br>tHFPERCLK|—|66 + 2 *<br>tHFPERCLK|ns|
|**Note:**<br>1. Applies for both CLKPHA = 0 and CLKPHA = 1 (figure only shows CLKPHA = 0)<br>2. Measurement done with 8 pF output loading at 10% and 90% of VDD(figure shows 50% of VDD)|||||||



**==> picture [371 x 125] intentionally omitted <==**

**----- Start of picture text -----**<br>
CS tCS_ACT_MI<br>tCS_DIS_MI<br>SCLK<br>CLKPOL = 0 tSCLK_HI tSCLK_LO<br>SCLK<br>CLKPOL = 1 tSU_MO tH_MO tSCLK<br>MOSI<br>tSCLK_MI<br>MISO<br>**----- End of picture text -----**<br>


**Figure 4.2.  SPI Slave Timing Diagram** 

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Rev. 1.3  |  45 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Typical Connection Diagrams 

## **5.  Typical Connection Diagrams** 

## **5.1  Typical Connections** 

The figure below shows a typical reference schematic and how to connect: 

- Power supplies and Ground pins 

- Antenna loop for internal antenna usage 

- XTAL loop 

- Debug port 

- Reset line 

- Optional UART connection to an external host for Network Co-Processor (NCP) usage 

**Note:** It's recommended to connect the reset line to the host CPU when NCP mode is used. 

**Figure 5.1.  Typical Connections** 

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Rev. 1.3  |  46 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Layout Guidelines 

## **6.  Layout Guidelines** 

For optimal performance of the BGM121/BGM123, please follow the PCB layout guidelines and ground plane recommendations indicated in this section. 

## **6.1  Layout Guidelines** 

This section contains generic PCB layout and design guidelines for the BGM121/BGM123 module. Generally, please follow these guidelines: 

- Place the module at the edge of the PCB, as shown in the figures in this chapter. 

- Do not place any metal (traces, components, etc.) in the antenna clearance area. 

- Connect all ground pads directly to a solid ground plane. 

- Place the ground vias as close to the ground pads as possible. 

## **Figure 6.1.  BGM121/BGM123 PCB Top Layer Design** 

Following rules are recommended for the PCB design: 

- Trace to copper clearance 150 μm 

- PTH drill size 300 μm 

- PTH annular ring 150 μm 

## **Important** : 

The antenna area must align with the pads precisely. Please referto the recommended PCB land pattern for exact dimensions. 

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Rev. 1.3  |  47 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet 

Layout Guidelines 

**Figure 6.2.  BGM121/BGM123 PCB Middle and Bottom Layer Design** 

## **Figure 6.3.  Poor Layout Designs for the BGM121/BGM123** 

## Layout checklist for BGM121/BGM123: 

1. Antenna area is aligned relative to the module pads as shown in the recommended PCB land pattern 

2. Clearance area within the inner layers and bottom layer is covering the whole antenna area as shown in the layoyt guidelines 

3. The antenna loop is implemented on top layer as shown in the layoyt guidelines 

4. All dimensions within the antenna area are precisely as shown in the recommended PCB land pattern 

5. The module is placed to the edge of the PCB with max 1mm intendation 

6. The mdoule is not placed to the corner of the PCB 

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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Layout Guidelines 

## **6.2  Effect of PCB Width** 

The BGM121/BGM123 module should be placed at the center of the PCB edge because the width of the board has an impact to the radiated efficiency but more importantly there should be enough ground plane on both sides of the module for optimal antenna performance. The figure below gives an indcation of ground plane size vs. maximum achievable range. 

**Figure 6.4.  BGM121/BGM123 PCB Top Layer Design** 

The impact of the board size to the radiated performance is a generic feature of all PCB and chip antennas and it is not a unique feature of BGM121/BGM123. In case of BGM121/BGM123 the depth of the board is not important and it doesn’t impact the radiated performance. 

## **6.3  Effect of Plastic and Metal Materials** 

The antenna on the BGM121/BGM123. is insensitive to the effects of nearby plastic and other materials with low dielectric constant and no separation between the BGM121/BGM123. and plastic or other materials is needed. Also the board thickness doesn’t have any impact the module. 

Any metal within the antenna area or in close proximity to the antenna area may detune the antenna. In this case it is possible to retune the antenna by adjusting the width of the antenna loop. To avoid detuning of the antenna the minimum distance to any metal should be more than 3mm. Encapsulating the module inside metal casing will prevent the radiation of the antenna. 

Following picture shows how it is possible to adjust the frequency of the antenna. The antenna is extremely robust against any objects in close proximity or in direct touch with the antenna and it is recommended not to adjust the dimensions of the antenna area unless it is clear that a metal object, such as a coin cell battery, within the antenna area is detuning the antenna. 

**Figure 6.5.  Tuning the Antenna by Adjusting the Width of the Antenna Loop** 

## **6.4  Effect of Human Body** 

Placing the module in touch or very close to the human body will negatively impact antenna efficiency and reduce range. 

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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Layout Guidelines 

## **6.5  2D Radiation Pattern Plots** 

**Figure 6.6.  Typical 2D Radiation Pattern – Front View** 

**Figure 6.7.  Typical 2D Radiation Pattern – Side View** 

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Rev. 1.3  |  50 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Layout Guidelines 

**Figure 6.8.  Typical 2D Radiation Pattern – Top View** 

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Rev. 1.3  |  51 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Pin Definitions 

## **7.  Pin Definitions** 

## **7.1  Pin Definitions** 

**Figure 7.1.  BGM121/BGM123 Pinout** 

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Rev. 1.3  |  52 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Pin Definitions 

## **Table 7.1.  Device Pinout** 

|||**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|
|---|---|---|---|---|---|---|
|**Pin #**|**Pin Name**|**Analog**|**Timers**|**Communication**|**Radio**|**Other**|
|**1**|RESETn|Reset input, active low.To apply an external reset source to this pin, it is required to only drive this pin low<br>during reset, and let the internal pull-up ensure that reset is released.|||||
|**2**|GND|Ground|||||
|**3**|GND|Ground|||||
|**4**|2G4RF_ANT_<br>IN|50 ohm input pin for the internal 2.4GHz antenna|||||
|**5**|2G4RF_RF_P<br>ORT|50 ohm 2.4GHz RF input and output|||||
|**6**|GND|Ground|||||
|**23**|DNC|Do not connect but leave floating|||||
|**24**|DNC|Do not connect but leave floating|||||
|**25**|GND|Ground|||||
|**26**|V_BATT|1.85 - 3.8VDC input to the internal DC-DC converter and AVDD. Internally decoupled and does not require<br>decoupling capacitors.|||||
|**27**|GND|Ground|||||
|**28**|V_1V8|1.8V output of the internal DC-DC converter. Internally decoupled so do not use an external decoupling ca-<br>pacitor.|||||
|**29**|GND|Ground|||||
|**30**|DNC|Do not connect but leave floating|||||
|**31**|V_IOVDD|Digital I/O power supply.|||||
|**32**|GND|Ground|||||
|**47**|GND|Ground|||||
|**48**|HFXO_IN|38.4MHz XTAL input. Connect to HFXO_OUT.|||||
|**49**|HFXO_OUT|38.4MHz XTAL output. Connect to HFXO_IN.|||||
|**50**|GND|Ground|||||
|**51**|GND|Ground|||||
|**52**|GND|Ground|||||
|**53**|ANT_GND|Antenna ground|||||
|**54**|GND|Ground|||||
|**55**|GND|Ground|||||
|**56**|GND|Ground|||||



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Rev. 1.3  |  53 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet 

Pin Definitions 

|||**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|
|---|---|---|---|---|---|---|
|**Pin #**|**Pin Name**|**Analog**|**Timers**|**Communication**|**Radio**|**Other**|
|**7**|PD9|BUSCY [ADC0:<br>APORT3YCH1<br>ACMP0:<br>APORT3YCH1<br>ACMP1:<br>APORT3YCH1<br>IDAC0:<br>APORT1YCH1]<br>BUSDX [ADC0:<br>APORT4XCH1<br>ACMP0:<br>APORT4XCH1<br>ACMP1:<br>APORT4XCH1]|TIM0_CC0 #17<br>TIM0_CC1 #16<br>TIM0_CC2 #15<br>TIM0_CDTI0 #14<br>TIM0_CDTI1 #13<br>TIM0_CDTI2 #12<br>TIM1_CC0 #17<br>TIM1_CC1 #16<br>TIM1_CC2 #15<br>TIM1_CC3 #14 LE-<br>TIM0_OUT0 #17<br>LETIM0_OUT1 #16<br>PCNT0_S0IN #17<br>PCNT0_S1IN #16|US0_TX #17<br>US0_RX #16<br>US0_CLK #15<br>US0_CS #14<br>US0_CTS #13<br>US0_RTS #12<br>US1_TX #17<br>US1_RX #16<br>US1_CLK #15<br>US1_CS #14<br>US1_CTS #13<br>US1_RTS #12<br>LEU0_TX #17<br>LEU0_RX #16<br>I2C0_SDA #17<br>I2C0_SCL #16|FRC_DCLK #17<br>FRC_DOUT #16<br>FRC_DFRAME #15<br>MODEM_DCLK<br>#17 MODEM_DIN<br>#16 MO-<br>DEM_DOUT #15<br>MODEM_ANT0<br>#14 MO-<br>DEM_ANT1 #13|CMU_CLK0 #4<br>PRS_CH3 #8<br>PRS_CH4 #0<br>PRS_CH5 #6<br>PRS_CH6 #11<br>ACMP0_O #17<br>ACMP1_O #17|
|**8**|PD10|BUSCX [ADC0:<br>APORT3XCH2<br>ACMP0:<br>APORT3XCH2<br>ACMP1:<br>APORT3XCH2<br>IDAC0:<br>APORT1XCH2]<br>BUSDY [ADC0:<br>APORT4YCH2<br>ACMP0:<br>APORT4YCH2<br>ACMP1:<br>APORT4YCH2]|TIM0_CC0 #18<br>TIM0_CC1 #17<br>TIM0_CC2 #16<br>TIM0_CDTI0 #15<br>TIM0_CDTI1 #14<br>TIM0_CDTI2 #13<br>TIM1_CC0 #18<br>TIM1_CC1 #17<br>TIM1_CC2 #16<br>TIM1_CC3 #15 LE-<br>TIM0_OUT0 #18<br>LETIM0_OUT1 #17<br>PCNT0_S0IN #18<br>PCNT0_S1IN #17|US0_TX #18<br>US0_RX #17<br>US0_CLK #16<br>US0_CS #15<br>US0_CTS #14<br>US0_RTS #13<br>US1_TX #18<br>US1_RX #17<br>US1_CLK #16<br>US1_CS #15<br>US1_CTS #14<br>US1_RTS #13<br>LEU0_TX #18<br>LEU0_RX #17<br>I2C0_SDA #18<br>I2C0_SCL #17|FRC_DCLK #18<br>FRC_DOUT #17<br>FRC_DFRAME #16<br>MODEM_DCLK<br>#18 MODEM_DIN<br>#17 MO-<br>DEM_DOUT #16<br>MODEM_ANT0<br>#15 MO-<br>DEM_ANT1 #14|CMU_CLK1 #4<br>PRS_CH3 #9<br>PRS_CH4 #1<br>PRS_CH5 #0<br>PRS_CH6 #12<br>ACMP0_O #18<br>ACMP1_O #18|
|**9**|PD11|BUSCY [ADC0:<br>APORT3YCH3<br>ACMP0:<br>APORT3YCH3<br>ACMP1:<br>APORT3YCH3<br>IDAC0:<br>APORT1YCH3]<br>BUSDX [ADC0:<br>APORT4XCH3<br>ACMP0:<br>APORT4XCH3<br>ACMP1:<br>APORT4XCH3]|TIM0_CC0 #19<br>TIM0_CC1 #18<br>TIM0_CC2 #17<br>TIM0_CDTI0 #16<br>TIM0_CDTI1 #15<br>TIM0_CDTI2 #14<br>TIM1_CC0 #19<br>TIM1_CC1 #18<br>TIM1_CC2 #17<br>TIM1_CC3 #16 LE-<br>TIM0_OUT0 #19<br>LETIM0_OUT1 #18<br>PCNT0_S0IN #19<br>PCNT0_S1IN #18|US0_TX #19<br>US0_RX #18<br>US0_CLK #17<br>US0_CS #16<br>US0_CTS #15<br>US0_RTS #14<br>US1_TX #19<br>US1_RX #18<br>US1_CLK #17<br>US1_CS #16<br>US1_CTS #15<br>US1_RTS #14<br>LEU0_TX #19<br>LEU0_RX #18<br>I2C0_SDA #19<br>I2C0_SCL #18|FRC_DCLK #19<br>FRC_DOUT #18<br>FRC_DFRAME #17<br>MODEM_DCLK<br>#19 MODEM_DIN<br>#18 MO-<br>DEM_DOUT #17<br>MODEM_ANT0<br>#16 MO-<br>DEM_ANT1 #15|PRS_CH3 #10<br>PRS_CH4 #2<br>PRS_CH5 #1<br>PRS_CH6 #13<br>ACMP0_O #19<br>ACMP1_O #19|



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Rev. 1.3  |  54 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Pin Definitions 

|||**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|
|---|---|---|---|---|---|---|
|**Pin #**|**Pin Name**|**Analog**|**Timers**|**Communication**|**Radio**|**Other**|
|**10**|PD12|BUSCX [ADC0:<br>APORT3XCH4<br>ACMP0:<br>APORT3XCH4<br>ACMP1:<br>APORT3XCH4<br>IDAC0:<br>APORT1XCH4]<br>BUSDY [ADC0:<br>APORT4YCH4<br>ACMP0:<br>APORT4YCH4<br>ACMP1:<br>APORT4YCH4]|TIM0_CC0 #20<br>TIM0_CC1 #19<br>TIM0_CC2 #18<br>TIM0_CDTI0 #17<br>TIM0_CDTI1 #16<br>TIM0_CDTI2 #15<br>TIM1_CC0 #20<br>TIM1_CC1 #19<br>TIM1_CC2 #18<br>TIM1_CC3 #17 LE-<br>TIM0_OUT0 #20<br>LETIM0_OUT1 #19<br>PCNT0_S0IN #20<br>PCNT0_S1IN #19|US0_TX #20<br>US0_RX #19<br>US0_CLK #18<br>US0_CS #17<br>US0_CTS #16<br>US0_RTS #15<br>US1_TX #20<br>US1_RX #19<br>US1_CLK #18<br>US1_CS #17<br>US1_CTS #16<br>US1_RTS #15<br>LEU0_TX #20<br>LEU0_RX #19<br>I2C0_SDA #20<br>I2C0_SCL #19|FRC_DCLK #20<br>FRC_DOUT #19<br>FRC_DFRAME #18<br>MODEM_DCLK<br>#20 MODEM_DIN<br>#19 MO-<br>DEM_DOUT #18<br>MODEM_ANT0<br>#17 MO-<br>DEM_ANT1 #16|PRS_CH3 #11<br>PRS_CH4 #3<br>PRS_CH5 #2<br>PRS_CH6 #14<br>ACMP0_O #20<br>ACMP1_O #20|
|**11**|PD13|BUSCY [ADC0:<br>APORT3YCH5<br>ACMP0:<br>APORT3YCH5<br>ACMP1:<br>APORT3YCH5<br>IDAC0:<br>APORT1YCH5]<br>BUSDX [ADC0:<br>APORT4XCH5<br>ACMP0:<br>APORT4XCH5<br>ACMP1:<br>APORT4XCH5]|TIM0_CC0 #21<br>TIM0_CC1 #20<br>TIM0_CC2 #19<br>TIM0_CDTI0 #18<br>TIM0_CDTI1 #17<br>TIM0_CDTI2 #16<br>TIM1_CC0 #21<br>TIM1_CC1 #20<br>TIM1_CC2 #19<br>TIM1_CC3 #18 LE-<br>TIM0_OUT0 #21<br>LETIM0_OUT1 #20<br>PCNT0_S0IN #21<br>PCNT0_S1IN #20|US0_TX #21<br>US0_RX #20<br>US0_CLK #19<br>US0_CS #18<br>US0_CTS #17<br>US0_RTS #16<br>US1_TX #21<br>US1_RX #20<br>US1_CLK #19<br>US1_CS #18<br>US1_CTS #17<br>US1_RTS #16<br>LEU0_TX #21<br>LEU0_RX #20<br>I2C0_SDA #21<br>I2C0_SCL #20|FRC_DCLK #21<br>FRC_DOUT #20<br>FRC_DFRAME #19<br>MODEM_DCLK<br>#21 MODEM_DIN<br>#20 MO-<br>DEM_DOUT #19<br>MODEM_ANT0<br>#18 MO-<br>DEM_ANT1 #17|PRS_CH3 #12<br>PRS_CH4 #4<br>PRS_CH5 #3<br>PRS_CH6 #15<br>ACMP0_O #21<br>ACMP1_O #21|
|**12**|PD14|BUSCX [ADC0:<br>APORT3XCH6<br>ACMP0:<br>APORT3XCH6<br>ACMP1:<br>APORT3XCH6<br>IDAC0:<br>APORT1XCH6]<br>BUSDY [ADC0:<br>APORT4YCH6<br>ACMP0:<br>APORT4YCH6<br>ACMP1:<br>APORT4YCH6]|TIM0_CC0 #22<br>TIM0_CC1 #21<br>TIM0_CC2 #20<br>TIM0_CDTI0 #19<br>TIM0_CDTI1 #18<br>TIM0_CDTI2 #17<br>TIM1_CC0 #22<br>TIM1_CC1 #21<br>TIM1_CC2 #20<br>TIM1_CC3 #19 LE-<br>TIM0_OUT0 #22<br>LETIM0_OUT1 #21<br>PCNT0_S0IN #22<br>PCNT0_S1IN #21|US0_TX #22<br>US0_RX #21<br>US0_CLK #20<br>US0_CS #19<br>US0_CTS #18<br>US0_RTS #17<br>US1_TX #22<br>US1_RX #21<br>US1_CLK #20<br>US1_CS #19<br>US1_CTS #18<br>US1_RTS #17<br>LEU0_TX #22<br>LEU0_RX #21<br>I2C0_SDA #22<br>I2C0_SCL #21|FRC_DCLK #22<br>FRC_DOUT #21<br>FRC_DFRAME #20<br>MODEM_DCLK<br>#22 MODEM_DIN<br>#21 MO-<br>DEM_DOUT #20<br>MODEM_ANT0<br>#19 MO-<br>DEM_ANT1 #18|CMU_CLK0 #5<br>PRS_CH3 #13<br>PRS_CH4 #5<br>PRS_CH5 #4<br>PRS_CH6 #16<br>ACMP0_O #22<br>ACMP1_O #22<br>GPIO_EM4WU4|



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Rev. 1.3  |  55 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet 

Pin Definitions 

|||**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|
|---|---|---|---|---|---|---|
|**Pin #**|**Pin Name**|**Analog**|**Timers**|**Communication**|**Radio**|**Other**|
|**13**|PD15|BUSCY [ADC0:<br>APORT3YCH7<br>ACMP0:<br>APORT3YCH7<br>ACMP1:<br>APORT3YCH7<br>IDAC0:<br>APORT1YCH7]<br>BUSDX [ADC0:<br>APORT4XCH7<br>ACMP0:<br>APORT4XCH7<br>ACMP1:<br>APORT4XCH7]|TIM0_CC0 #23<br>TIM0_CC1 #22<br>TIM0_CC2 #21<br>TIM0_CDTI0 #20<br>TIM0_CDTI1 #19<br>TIM0_CDTI2 #18<br>TIM1_CC0 #23<br>TIM1_CC1 #22<br>TIM1_CC2 #21<br>TIM1_CC3 #20 LE-<br>TIM0_OUT0 #23<br>LETIM0_OUT1 #22<br>PCNT0_S0IN #23<br>PCNT0_S1IN #22|US0_TX #23<br>US0_RX #22<br>US0_CLK #21<br>US0_CS #20<br>US0_CTS #19<br>US0_RTS #18<br>US1_TX #23<br>US1_RX #22<br>US1_CLK #21<br>US1_CS #20<br>US1_CTS #19<br>US1_RTS #18<br>LEU0_TX #23<br>LEU0_RX #22<br>I2C0_SDA #23<br>I2C0_SCL #22|FRC_DCLK #23<br>FRC_DOUT #22<br>FRC_DFRAME #21<br>MODEM_DCLK<br>#23 MODEM_DIN<br>#22 MO-<br>DEM_DOUT #21<br>MODEM_ANT0<br>#20 MO-<br>DEM_ANT1 #19|CMU_CLK1 #5<br>PRS_CH3 #14<br>PRS_CH4 #6<br>PRS_CH5 #5<br>PRS_CH6 #17<br>ACMP0_O #23<br>ACMP1_O #23<br>DBG_SWO #2|
|**14**|PA0|ADC0_EXTN<br>BUSCX [ADC0:<br>APORT3XCH8<br>ACMP0:<br>APORT3XCH8<br>ACMP1:<br>APORT3XCH8<br>IDAC0:<br>APORT1XCH8]<br>BUSDY [ADC0:<br>APORT4YCH8<br>ACMP0:<br>APORT4YCH8<br>ACMP1:<br>APORT4YCH8]|TIM0_CC0 #0<br>TIM0_CC1 #31<br>TIM0_CC2 #30<br>TIM0_CDTI0 #29<br>TIM0_CDTI1 #28<br>TIM0_CDTI2 #27<br>TIM1_CC0 #0<br>TIM1_CC1 #31<br>TIM1_CC2 #30<br>TIM1_CC3 #29 LE-<br>TIM0_OUT0 #0 LE-<br>TIM0_OUT1 #31<br>PCNT0_S0IN #0<br>PCNT0_S1IN #31|US0_TX #0<br>US0_RX #31<br>US0_CLK #30<br>US0_CS #29<br>US0_CTS #28<br>US0_RTS #27<br>US1_TX #0<br>US1_RX #31<br>US1_CLK #30<br>US1_CS #29<br>US1_CTS #28<br>US1_RTS #27<br>LEU0_TX #0<br>LEU0_RX #31<br>I2C0_SDA #0<br>I2C0_SCL #31|FRC_DCLK #0<br>FRC_DOUT #31<br>FRC_DFRAME #30<br>MODEM_DCLK #0<br>MODEM_DIN #31<br>MODEM_DOUT<br>#30 MO-<br>DEM_ANT0 #29<br>MODEM_ANT1<br>#28|CMU_CLK1 #0<br>PRS_CH6 #0<br>PRS_CH7 #10<br>PRS_CH8 #9<br>PRS_CH9 #8<br>ACMP0_O #0<br>ACMP1_O #0|
|**15**|PA1|ADC0_EXTP<br>BUSCY [ADC0:<br>APORT3YCH9<br>ACMP0:<br>APORT3YCH9<br>ACMP1:<br>APORT3YCH9<br>IDAC0:<br>APORT1YCH9]<br>BUSDX [ADC0:<br>APORT4XCH9<br>ACMP0:<br>APORT4XCH9<br>ACMP1:<br>APORT4XCH9]|TIM0_CC0 #1<br>TIM0_CC1 #0<br>TIM0_CC2 #31<br>TIM0_CDTI0 #30<br>TIM0_CDTI1 #29<br>TIM0_CDTI2 #28<br>TIM1_CC0 #1<br>TIM1_CC1 #0<br>TIM1_CC2 #31<br>TIM1_CC3 #30 LE-<br>TIM0_OUT0 #1 LE-<br>TIM0_OUT1 #0<br>PCNT0_S0IN #1<br>PCNT0_S1IN #0|US0_TX #1<br>US0_RX #0<br>US0_CLK #31<br>US0_CS #30<br>US0_CTS #29<br>US0_RTS #28<br>US1_TX #1<br>US1_RX #0<br>US1_CLK #31<br>US1_CS #30<br>US1_CTS #29<br>US1_RTS #28<br>LEU0_TX #1<br>LEU0_RX #0<br>I2C0_SDA #1<br>I2C0_SCL #0|FRC_DCLK #1<br>FRC_DOUT #0<br>FRC_DFRAME #31<br>MODEM_DCLK #1<br>MODEM_DIN #0<br>MODEM_DOUT<br>#31 MO-<br>DEM_ANT0 #30<br>MODEM_ANT1<br>#29|CMU_CLK0 #0<br>PRS_CH6 #1<br>PRS_CH7 #0<br>PRS_CH8 #10<br>PRS_CH9 #9<br>ACMP0_O #1<br>ACMP1_O #1|



**silabs.com** | Building a more connected world. 

Rev. 1.3  |  56 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Pin Definitions 

|||**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|
|---|---|---|---|---|---|---|
|**Pin #**|**Pin Name**|**Analog**|**Timers**|**Communication**|**Radio**|**Other**|
|**16**|PA2|BUSCX [ADC0:<br>APORT3XCH10<br>ACMP0:<br>APORT3XCH10<br>ACMP1:<br>APORT3XCH10<br>IDAC0:<br>APORT1XCH10]<br>BUSDY [ADC0:<br>APORT4YCH10<br>ACMP0:<br>APORT4YCH10<br>ACMP1:<br>APORT4YCH10]|TIM0_CC0 #2<br>TIM0_CC1 #1<br>TIM0_CC2 #0<br>TIM0_CDTI0 #31<br>TIM0_CDTI1 #30<br>TIM0_CDTI2 #29<br>TIM1_CC0 #2<br>TIM1_CC1 #1<br>TIM1_CC2 #0<br>TIM1_CC3 #31 LE-<br>TIM0_OUT0 #2 LE-<br>TIM0_OUT1 #1<br>PCNT0_S0IN #2<br>PCNT0_S1IN #1|US0_TX #2<br>US0_RX #1<br>US0_CLK #0<br>US0_CS #31<br>US0_CTS #30<br>US0_RTS #29<br>US1_TX #2<br>US1_RX #1<br>US1_CLK #0<br>US1_CS #31<br>US1_CTS #30<br>US1_RTS #29<br>LEU0_TX #2<br>LEU0_RX #1<br>I2C0_SDA #2<br>I2C0_SCL #1|FRC_DCLK #2<br>FRC_DOUT #1<br>FRC_DFRAME #0<br>MODEM_DCLK #2<br>MODEM_DIN #1<br>MODEM_DOUT #0<br>MODEM_ANT0<br>#31 MO-<br>DEM_ANT1 #30|PRS_CH6 #2<br>PRS_CH7 #1<br>PRS_CH8 #0<br>PRS_CH9 #10<br>ACMP0_O #2<br>ACMP1_O #2|
|**17**|PA3|BUSCY [ADC0:<br>APORT3YCH11<br>ACMP0:<br>APORT3YCH11<br>ACMP1:<br>APORT3YCH11<br>IDAC0:<br>APORT1YCH11]<br>BUSDX [ADC0:<br>APORT4XCH11<br>ACMP0:<br>APORT4XCH11<br>ACMP1:<br>APORT4XCH11]|TIM0_CC0 #3<br>TIM0_CC1 #2<br>TIM0_CC2 #1<br>TIM0_CDTI0 #0<br>TIM0_CDTI1 #31<br>TIM0_CDTI2 #30<br>TIM1_CC0 #3<br>TIM1_CC1 #2<br>TIM1_CC2 #1<br>TIM1_CC3 #0 LE-<br>TIM0_OUT0 #3 LE-<br>TIM0_OUT1 #2<br>PCNT0_S0IN #3<br>PCNT0_S1IN #2|US0_TX #3<br>US0_RX #2<br>US0_CLK #1<br>US0_CS #0<br>US0_CTS #31<br>US0_RTS #30<br>US1_TX #3<br>US1_RX #2<br>US1_CLK #1<br>US1_CS #0<br>US1_CTS #31<br>US1_RTS #30<br>LEU0_TX #3<br>LEU0_RX #2<br>I2C0_SDA #3<br>I2C0_SCL #2|FRC_DCLK #3<br>FRC_DOUT #2<br>FRC_DFRAME #1<br>MODEM_DCLK #3<br>MODEM_DIN #2<br>MODEM_DOUT #1<br>MODEM_ANT0 #0<br>MODEM_ANT1<br>#31|PRS_CH6 #3<br>PRS_CH7 #2<br>PRS_CH8 #1<br>PRS_CH9 #0<br>ACMP0_O #3<br>ACMP1_O #3<br>GPIO_EM4WU8|
|**18**|PA4|BUSCX [ADC0:<br>APORT3XCH12<br>ACMP0:<br>APORT3XCH12<br>ACMP1:<br>APORT3XCH12<br>IDAC0:<br>APORT1XCH12]<br>BUSDY [ADC0:<br>APORT4YCH12<br>ACMP0:<br>APORT4YCH12<br>ACMP1:<br>APORT4YCH12]|TIM0_CC0 #4<br>TIM0_CC1 #3<br>TIM0_CC2 #2<br>TIM0_CDTI0 #1<br>TIM0_CDTI1 #0<br>TIM0_CDTI2 #31<br>TIM1_CC0 #4<br>TIM1_CC1 #3<br>TIM1_CC2 #2<br>TIM1_CC3 #1 LE-<br>TIM0_OUT0 #4 LE-<br>TIM0_OUT1 #3<br>PCNT0_S0IN #4<br>PCNT0_S1IN #3|US0_TX #4<br>US0_RX #3<br>US0_CLK #2<br>US0_CS #1<br>US0_CTS #0<br>US0_RTS #31<br>US1_TX #4<br>US1_RX #3<br>US1_CLK #2<br>US1_CS #1<br>US1_CTS #0<br>US1_RTS #31<br>LEU0_TX #4<br>LEU0_RX #3<br>I2C0_SDA #4<br>I2C0_SCL #3|FRC_DCLK #4<br>FRC_DOUT #3<br>FRC_DFRAME #2<br>MODEM_DCLK #4<br>MODEM_DIN #3<br>MODEM_DOUT #2<br>MODEM_ANT0 #1<br>MODEM_ANT1 #0|PRS_CH6 #4<br>PRS_CH7 #3<br>PRS_CH8 #2<br>PRS_CH9 #1<br>ACMP0_O #4<br>ACMP1_O #4|



**silabs.com** | Building a more connected world. 

Rev. 1.3  |  57 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet 

Pin Definitions 

|||**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|
|---|---|---|---|---|---|---|
|**Pin #**|**Pin Name**|**Analog**|**Timers**|**Communication**|**Radio**|**Other**|
|**19**|PA5|BUSCY [ADC0:<br>APORT3YCH13<br>ACMP0:<br>APORT3YCH13<br>ACMP1:<br>APORT3YCH13<br>IDAC0:<br>APORT1YCH13]<br>BUSDX [ADC0:<br>APORT4XCH13<br>ACMP0:<br>APORT4XCH13<br>ACMP1:<br>APORT4XCH13]|TIM0_CC0 #5<br>TIM0_CC1 #4<br>TIM0_CC2 #3<br>TIM0_CDTI0 #2<br>TIM0_CDTI1 #1<br>TIM0_CDTI2 #0<br>TIM1_CC0 #5<br>TIM1_CC1 #4<br>TIM1_CC2 #3<br>TIM1_CC3 #2 LE-<br>TIM0_OUT0 #5 LE-<br>TIM0_OUT1 #4<br>PCNT0_S0IN #5<br>PCNT0_S1IN #4|US0_TX #5<br>US0_RX #4<br>US0_CLK #3<br>US0_CS #2<br>US0_CTS #1<br>US0_RTS #0<br>US1_TX #5<br>US1_RX #4<br>US1_CLK #3<br>US1_CS #2<br>US1_CTS #1<br>US1_RTS #0<br>LEU0_TX #5<br>LEU0_RX #4<br>I2C0_SDA #5<br>I2C0_SCL #4|FRC_DCLK #5<br>FRC_DOUT #4<br>FRC_DFRAME #3<br>MODEM_DCLK #5<br>MODEM_DIN #4<br>MODEM_DOUT #3<br>MODEM_ANT0 #2<br>MODEM_ANT1 #1|PRS_CH6 #5<br>PRS_CH7 #4<br>PRS_CH8 #3<br>PRS_CH9 #2<br>ACMP0_O #5<br>ACMP1_O #5|
|**20**|PB11|BUSCY [ADC0:<br>APORT3YCH27<br>ACMP0:<br>APORT3YCH27<br>ACMP1:<br>APORT3YCH27<br>IDAC0:<br>APORT1YCH27]<br>BUSDX [ADC0:<br>APORT4XCH27<br>ACMP0:<br>APORT4XCH27<br>ACMP1:<br>APORT4XCH27]|TIM0_CC0 #6<br>TIM0_CC1 #5<br>TIM0_CC2 #4<br>TIM0_CDTI0 #3<br>TIM0_CDTI1 #2<br>TIM0_CDTI2 #1<br>TIM1_CC0 #6<br>TIM1_CC1 #5<br>TIM1_CC2 #4<br>TIM1_CC3 #3 LE-<br>TIM0_OUT0 #6 LE-<br>TIM0_OUT1 #5<br>PCNT0_S0IN #6<br>PCNT0_S1IN #5|US0_TX #6<br>US0_RX #5<br>US0_CLK #4<br>US0_CS #3<br>US0_CTS #2<br>US0_RTS #1<br>US1_TX #6<br>US1_RX #5<br>US1_CLK #4<br>US1_CS #3<br>US1_CTS #2<br>US1_RTS #1<br>LEU0_TX #6<br>LEU0_RX #5<br>I2C0_SDA #6<br>I2C0_SCL #5|FRC_DCLK #6<br>FRC_DOUT #5<br>FRC_DFRAME #4<br>MODEM_DCLK #6<br>MODEM_DIN #5<br>MODEM_DOUT #4<br>MODEM_ANT0 #3<br>MODEM_ANT1 #2|PRS_CH6 #6<br>PRS_CH7 #5<br>PRS_CH8 #4<br>PRS_CH9 #3<br>ACMP0_O #6<br>ACMP1_O #6|
|**21**|PB12|BUSCX [ADC0:<br>APORT3XCH28<br>ACMP0:<br>APORT3XCH28<br>ACMP1:<br>APORT3XCH28<br>IDAC0:<br>APORT1XCH28]<br>BUSDY [ADC0:<br>APORT4YCH28<br>ACMP0:<br>APORT4YCH28<br>ACMP1:<br>APORT4YCH28]|TIM0_CC0 #7<br>TIM0_CC1 #6<br>TIM0_CC2 #5<br>TIM0_CDTI0 #4<br>TIM0_CDTI1 #3<br>TIM0_CDTI2 #2<br>TIM1_CC0 #7<br>TIM1_CC1 #6<br>TIM1_CC2 #5<br>TIM1_CC3 #4 LE-<br>TIM0_OUT0 #7 LE-<br>TIM0_OUT1 #6<br>PCNT0_S0IN #7<br>PCNT0_S1IN #6|US0_TX #7<br>US0_RX #6<br>US0_CLK #5<br>US0_CS #4<br>US0_CTS #3<br>US0_RTS #2<br>US1_TX #7<br>US1_RX #6<br>US1_CLK #5<br>US1_CS #4<br>US1_CTS #3<br>US1_RTS #2<br>LEU0_TX #7<br>LEU0_RX #6<br>I2C0_SDA #7<br>I2C0_SCL #6|FRC_DCLK #7<br>FRC_DOUT #6<br>FRC_DFRAME #5<br>MODEM_DCLK #7<br>MODEM_DIN #6<br>MODEM_DOUT #5<br>MODEM_ANT0 #4<br>MODEM_ANT1 #3|PRS_CH6 #7<br>PRS_CH7 #6<br>PRS_CH8 #5<br>PRS_CH9 #4<br>ACMP0_O #7<br>ACMP1_O #7|



**silabs.com** | Building a more connected world. 

Rev. 1.3  |  58 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet 

Pin Definitions 

|||**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|
|---|---|---|---|---|---|---|
|**Pin #**|**Pin Name**|**Analog**|**Timers**|**Communication**|**Radio**|**Other**|
|**22**|PB13|BUSCY [ADC0:<br>APORT3YCH29<br>ACMP0:<br>APORT3YCH29<br>ACMP1:<br>APORT3YCH29<br>IDAC0:<br>APORT1YCH29]<br>BUSDX [ADC0:<br>APORT4XCH29<br>ACMP0:<br>APORT4XCH29<br>ACMP1:<br>APORT4XCH29]|TIM0_CC0 #8<br>TIM0_CC1 #7<br>TIM0_CC2 #6<br>TIM0_CDTI0 #5<br>TIM0_CDTI1 #4<br>TIM0_CDTI2 #3<br>TIM1_CC0 #8<br>TIM1_CC1 #7<br>TIM1_CC2 #6<br>TIM1_CC3 #5 LE-<br>TIM0_OUT0 #8 LE-<br>TIM0_OUT1 #7<br>PCNT0_S0IN #8<br>PCNT0_S1IN #7|US0_TX #8<br>US0_RX #7<br>US0_CLK #6<br>US0_CS #5<br>US0_CTS #4<br>US0_RTS #3<br>US1_TX #8<br>US1_RX #7<br>US1_CLK #6<br>US1_CS #5<br>US1_CTS #4<br>US1_RTS #3<br>LEU0_TX #8<br>LEU0_RX #7<br>I2C0_SDA #8<br>I2C0_SCL #7|FRC_DCLK #8<br>FRC_DOUT #7<br>FRC_DFRAME #6<br>MODEM_DCLK #8<br>MODEM_DIN #7<br>MODEM_DOUT #6<br>MODEM_ANT0 #5<br>MODEM_ANT1 #4|PRS_CH6 #8<br>PRS_CH7 #7<br>PRS_CH8 #6<br>PRS_CH9 #5<br>ACMP0_O #8<br>ACMP1_O #8<br>DBG_SWO #1<br>GPIO_EM4WU9|
|**33**|PC6|BUSAX [ADC0:<br>APORT1XCH6<br>ACMP0:<br>APORT1XCH6<br>ACMP1:<br>APORT1XCH6]<br>BUSBY [ADC0:<br>APORT2YCH6<br>ACMP0:<br>APORT2YCH6<br>ACMP1:<br>APORT2YCH6]|TIM0_CC0 #11<br>TIM0_CC1 #10<br>TIM0_CC2 #9<br>TIM0_CDTI0 #8<br>TIM0_CDTI1 #7<br>TIM0_CDTI2 #6<br>TIM1_CC0 #11<br>TIM1_CC1 #10<br>TIM1_CC2 #9<br>TIM1_CC3 #8 LE-<br>TIM0_OUT0 #11<br>LETIM0_OUT1 #10<br>PCNT0_S0IN #11<br>PCNT0_S1IN #10|US0_TX #11<br>US0_RX #10<br>US0_CLK #9<br>US0_CS #8<br>US0_CTS #7<br>US0_RTS #6<br>US1_TX #11<br>US1_RX #10<br>US1_CLK #9<br>US1_CS #8<br>US1_CTS #7<br>US1_RTS #6<br>LEU0_TX #11<br>LEU0_RX #10<br>I2C0_SDA #11<br>I2C0_SCL #10|FRC_DCLK #11<br>FRC_DOUT #10<br>FRC_DFRAME #9<br>MODEM_DCLK<br>#11 MODEM_DIN<br>#10 MO-<br>DEM_DOUT #9<br>MODEM_ANT0 #8<br>MODEM_ANT1 #7|CMU_CLK0 #2<br>PRS_CH0 #8<br>PRS_CH9 #11<br>PRS_CH10 #0<br>PRS_CH11 #5<br>ACMP0_O #11<br>ACMP1_O #11|
|**34**|PC7|BUSAY [ADC0:<br>APORT1YCH7<br>ACMP0:<br>APORT1YCH7<br>ACMP1:<br>APORT1YCH7]<br>BUSBX [ADC0:<br>APORT2XCH7<br>ACMP0:<br>APORT2XCH7<br>ACMP1:<br>APORT2XCH7]|TIM0_CC0 #12<br>TIM0_CC1 #11<br>TIM0_CC2 #10<br>TIM0_CDTI0 #9<br>TIM0_CDTI1 #8<br>TIM0_CDTI2 #7<br>TIM1_CC0 #12<br>TIM1_CC1 #11<br>TIM1_CC2 #10<br>TIM1_CC3 #9 LE-<br>TIM0_OUT0 #12<br>LETIM0_OUT1 #11<br>PCNT0_S0IN #12<br>PCNT0_S1IN #11|US0_TX #12<br>US0_RX #11<br>US0_CLK #10<br>US0_CS #9<br>US0_CTS #8<br>US0_RTS #7<br>US1_TX #12<br>US1_RX #11<br>US1_CLK #10<br>US1_CS #9<br>US1_CTS #8<br>US1_RTS #7<br>LEU0_TX #12<br>LEU0_RX #11<br>I2C0_SDA #12<br>I2C0_SCL #11|FRC_DCLK #12<br>FRC_DOUT #11<br>FRC_DFRAME #10<br>MODEM_DCLK<br>#12 MODEM_DIN<br>#11 MO-<br>DEM_DOUT #10<br>MODEM_ANT0 #9<br>MODEM_ANT1 #8|CMU_CLK1 #2<br>PRS_CH0 #9<br>PRS_CH9 #12<br>PRS_CH10 #1<br>PRS_CH11 #0<br>ACMP0_O #12<br>ACMP1_O #12|



**silabs.com** | Building a more connected world. 

Rev. 1.3  |  59 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Pin Definitions 

|||**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|
|---|---|---|---|---|---|---|
|**Pin #**|**Pin Name**|**Analog**|**Timers**|**Communication**|**Radio**|**Other**|
|**35**|PC8|BUSAX [ADC0:<br>APORT1XCH8<br>ACMP0:<br>APORT1XCH8<br>ACMP1:<br>APORT1XCH8]<br>BUSBY [ADC0:<br>APORT2YCH8<br>ACMP0:<br>APORT2YCH8<br>ACMP1:<br>APORT2YCH8]|TIM0_CC0 #13<br>TIM0_CC1 #12<br>TIM0_CC2 #11<br>TIM0_CDTI0 #10<br>TIM0_CDTI1 #9<br>TIM0_CDTI2 #8<br>TIM1_CC0 #13<br>TIM1_CC1 #12<br>TIM1_CC2 #11<br>TIM1_CC3 #10 LE-<br>TIM0_OUT0 #13<br>LETIM0_OUT1 #12<br>PCNT0_S0IN #13<br>PCNT0_S1IN #12|US0_TX #13<br>US0_RX #12<br>US0_CLK #11<br>US0_CS #10<br>US0_CTS #9<br>US0_RTS #8<br>US1_TX #13<br>US1_RX #12<br>US1_CLK #11<br>US1_CS #10<br>US1_CTS #9<br>US1_RTS #8<br>LEU0_TX #13<br>LEU0_RX #12<br>I2C0_SDA #13<br>I2C0_SCL #12|FRC_DCLK #13<br>FRC_DOUT #12<br>FRC_DFRAME #11<br>MODEM_DCLK<br>#13 MODEM_DIN<br>#12 MO-<br>DEM_DOUT #11<br>MODEM_ANT0<br>#10 MO-<br>DEM_ANT1 #9|PRS_CH0 #10<br>PRS_CH9 #13<br>PRS_CH10 #2<br>PRS_CH11 #1<br>ACMP0_O #13<br>ACMP1_O #13|
|**36**|PC9|BUSAY [ADC0:<br>APORT1YCH9<br>ACMP0:<br>APORT1YCH9<br>ACMP1:<br>APORT1YCH9]<br>BUSBX [ADC0:<br>APORT2XCH9<br>ACMP0:<br>APORT2XCH9<br>ACMP1:<br>APORT2XCH9]|TIM0_CC0 #14<br>TIM0_CC1 #13<br>TIM0_CC2 #12<br>TIM0_CDTI0 #11<br>TIM0_CDTI1 #10<br>TIM0_CDTI2 #9<br>TIM1_CC0 #14<br>TIM1_CC1 #13<br>TIM1_CC2 #12<br>TIM1_CC3 #11 LE-<br>TIM0_OUT0 #14<br>LETIM0_OUT1 #13<br>PCNT0_S0IN #14<br>PCNT0_S1IN #13|US0_TX #14<br>US0_RX #13<br>US0_CLK #12<br>US0_CS #11<br>US0_CTS #10<br>US0_RTS #9<br>US1_TX #14<br>US1_RX #13<br>US1_CLK #12<br>US1_CS #11<br>US1_CTS #10<br>US1_RTS #9<br>LEU0_TX #14<br>LEU0_RX #13<br>I2C0_SDA #14<br>I2C0_SCL #13|FRC_DCLK #14<br>FRC_DOUT #13<br>FRC_DFRAME #12<br>MODEM_DCLK<br>#14 MODEM_DIN<br>#13 MO-<br>DEM_DOUT #12<br>MODEM_ANT0<br>#11 MO-<br>DEM_ANT1 #10|PRS_CH0 #11<br>PRS_CH9 #14<br>PRS_CH10 #3<br>PRS_CH11 #2<br>ACMP0_O #14<br>ACMP1_O #14|
|**37**|PC10|BUSAX [ADC0:<br>APORT1XCH10<br>ACMP0:<br>APORT1XCH10<br>ACMP1:<br>APORT1XCH10]<br>BUSBY [ADC0:<br>APORT2YCH10<br>ACMP0:<br>APORT2YCH10<br>ACMP1:<br>APORT2YCH10]|TIM0_CC0 #15<br>TIM0_CC1 #14<br>TIM0_CC2 #13<br>TIM0_CDTI0 #12<br>TIM0_CDTI1 #11<br>TIM0_CDTI2 #10<br>TIM1_CC0 #15<br>TIM1_CC1 #14<br>TIM1_CC2 #13<br>TIM1_CC3 #12 LE-<br>TIM0_OUT0 #15<br>LETIM0_OUT1 #14<br>PCNT0_S0IN #15<br>PCNT0_S1IN #14|US0_TX #15<br>US0_RX #14<br>US0_CLK #13<br>US0_CS #12<br>US0_CTS #11<br>US0_RTS #10<br>US1_TX #15<br>US1_RX #14<br>US1_CLK #13<br>US1_CS #12<br>US1_CTS #11<br>US1_RTS #10<br>LEU0_TX #15<br>LEU0_RX #14<br>I2C0_SDA #15<br>I2C0_SCL #14|FRC_DCLK #15<br>FRC_DOUT #14<br>FRC_DFRAME #13<br>MODEM_DCLK<br>#15 MODEM_DIN<br>#14 MO-<br>DEM_DOUT #13<br>MODEM_ANT0<br>#12 MO-<br>DEM_ANT1 #11|CMU_CLK1 #3<br>PRS_CH0 #12<br>PRS_CH9 #15<br>PRS_CH10 #4<br>PRS_CH11 #3<br>ACMP0_O #15<br>ACMP1_O #15<br>GPIO_EM4WU12|



**silabs.com** | Building a more connected world. 

Rev. 1.3  |  60 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Pin Definitions 

|||**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|
|---|---|---|---|---|---|---|
|**Pin #**|**Pin Name**|**Analog**|**Timers**|**Communication**|**Radio**|**Other**|
|**38**|PC11|BUSAY [ADC0:<br>APORT1YCH11<br>ACMP0:<br>APORT1YCH11<br>ACMP1:<br>APORT1YCH11]<br>BUSBX [ADC0:<br>APORT2XCH11<br>ACMP0:<br>APORT2XCH11<br>ACMP1:<br>APORT2XCH11]|TIM0_CC0 #16<br>TIM0_CC1 #15<br>TIM0_CC2 #14<br>TIM0_CDTI0 #13<br>TIM0_CDTI1 #12<br>TIM0_CDTI2 #11<br>TIM1_CC0 #16<br>TIM1_CC1 #15<br>TIM1_CC2 #14<br>TIM1_CC3 #13 LE-<br>TIM0_OUT0 #16<br>LETIM0_OUT1 #15<br>PCNT0_S0IN #16<br>PCNT0_S1IN #15|US0_TX #16<br>US0_RX #15<br>US0_CLK #14<br>US0_CS #13<br>US0_CTS #12<br>US0_RTS #11<br>US1_TX #16<br>US1_RX #15<br>US1_CLK #14<br>US1_CS #13<br>US1_CTS #12<br>US1_RTS #11<br>LEU0_TX #16<br>LEU0_RX #15<br>I2C0_SDA #16<br>I2C0_SCL #15|FRC_DCLK #16<br>FRC_DOUT #15<br>FRC_DFRAME #14<br>MODEM_DCLK<br>#16 MODEM_DIN<br>#15 MO-<br>DEM_DOUT #14<br>MODEM_ANT0<br>#13 MO-<br>DEM_ANT1 #12|CMU_CLK0 #3<br>PRS_CH0 #13<br>PRS_CH9 #16<br>PRS_CH10 #5<br>PRS_CH11 #4<br>ACMP0_O #16<br>ACMP1_O #16<br>DBG_SWO #3|
|**39**|PF0|BUSAX [ADC0:<br>APORT1XCH16<br>ACMP0:<br>APORT1XCH16<br>ACMP1:<br>APORT1XCH16]<br>BUSBY [ADC0:<br>APORT2YCH16<br>ACMP0:<br>APORT2YCH16<br>ACMP1:<br>APORT2YCH16]|TIM0_CC0 #24<br>TIM0_CC1 #23<br>TIM0_CC2 #22<br>TIM0_CDTI0 #21<br>TIM0_CDTI1 #20<br>TIM0_CDTI2 #19<br>TIM1_CC0 #24<br>TIM1_CC1 #23<br>TIM1_CC2 #22<br>TIM1_CC3 #21 LE-<br>TIM0_OUT0 #24<br>LETIM0_OUT1 #23<br>PCNT0_S0IN #24<br>PCNT0_S1IN #23|US0_TX #24<br>US0_RX #23<br>US0_CLK #22<br>US0_CS #21<br>US0_CTS #20<br>US0_RTS #19<br>US1_TX #24<br>US1_RX #23<br>US1_CLK #22<br>US1_CS #21<br>US1_CTS #20<br>US1_RTS #19<br>LEU0_TX #24<br>LEU0_RX #23<br>I2C0_SDA #24<br>I2C0_SCL #23|FRC_DCLK #24<br>FRC_DOUT #23<br>FRC_DFRAME #22<br>MODEM_DCLK<br>#24 MODEM_DIN<br>#23 MO-<br>DEM_DOUT #22<br>MODEM_ANT0<br>#21 MO-<br>DEM_ANT1 #20|PRS_CH0 #0<br>PRS_CH1 #7<br>PRS_CH2 #6<br>PRS_CH3 #5<br>ACMP0_O #24<br>ACMP1_O #24<br>DBG_SWCLKTCK<br>#0|
|**40**|PF1|BUSAY [ADC0:<br>APORT1YCH17<br>ACMP0:<br>APORT1YCH17<br>ACMP1:<br>APORT1YCH17]<br>BUSBX [ADC0:<br>APORT2XCH17<br>ACMP0:<br>APORT2XCH17<br>ACMP1:<br>APORT2XCH17]|TIM0_CC0 #25<br>TIM0_CC1 #24<br>TIM0_CC2 #23<br>TIM0_CDTI0 #22<br>TIM0_CDTI1 #21<br>TIM0_CDTI2 #20<br>TIM1_CC0 #25<br>TIM1_CC1 #24<br>TIM1_CC2 #23<br>TIM1_CC3 #22 LE-<br>TIM0_OUT0 #25<br>LETIM0_OUT1 #24<br>PCNT0_S0IN #25<br>PCNT0_S1IN #24|US0_TX #25<br>US0_RX #24<br>US0_CLK #23<br>US0_CS #22<br>US0_CTS #21<br>US0_RTS #20<br>US1_TX #25<br>US1_RX #24<br>US1_CLK #23<br>US1_CS #22<br>US1_CTS #21<br>US1_RTS #20<br>LEU0_TX #25<br>LEU0_RX #24<br>I2C0_SDA #25<br>I2C0_SCL #24|FRC_DCLK #25<br>FRC_DOUT #24<br>FRC_DFRAME #23<br>MODEM_DCLK<br>#25 MODEM_DIN<br>#24 MO-<br>DEM_DOUT #23<br>MODEM_ANT0<br>#22 MO-<br>DEM_ANT1 #21|PRS_CH0 #1<br>PRS_CH1 #0<br>PRS_CH2 #7<br>PRS_CH3 #6<br>ACMP0_O #25<br>ACMP1_O #25<br>DBG_SWDIOTMS<br>#0|



**silabs.com** | Building a more connected world. 

Rev. 1.3  |  61 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Pin Definitions 

|||**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|
|---|---|---|---|---|---|---|
|**Pin #**|**Pin Name**|**Analog**|**Timers**|**Communication**|**Radio**|**Other**|
|**41**|PF2|BUSAX [ADC0:<br>APORT1XCH18<br>ACMP0:<br>APORT1XCH18<br>ACMP1:<br>APORT1XCH18]<br>BUSBY [ADC0:<br>APORT2YCH18<br>ACMP0:<br>APORT2YCH18<br>ACMP1:<br>APORT2YCH18]|TIM0_CC0 #26<br>TIM0_CC1 #25<br>TIM0_CC2 #24<br>TIM0_CDTI0 #23<br>TIM0_CDTI1 #22<br>TIM0_CDTI2 #21<br>TIM1_CC0 #26<br>TIM1_CC1 #25<br>TIM1_CC2 #24<br>TIM1_CC3 #23 LE-<br>TIM0_OUT0 #26<br>LETIM0_OUT1 #25<br>PCNT0_S0IN #26<br>PCNT0_S1IN #25|US0_TX #26<br>US0_RX #25<br>US0_CLK #24<br>US0_CS #23<br>US0_CTS #22<br>US0_RTS #21<br>US1_TX #26<br>US1_RX #25<br>US1_CLK #24<br>US1_CS #23<br>US1_CTS #22<br>US1_RTS #21<br>LEU0_TX #26<br>LEU0_RX #25<br>I2C0_SDA #26<br>I2C0_SCL #25|FRC_DCLK #26<br>FRC_DOUT #25<br>FRC_DFRAME #24<br>MODEM_DCLK<br>#26 MODEM_DIN<br>#25 MO-<br>DEM_DOUT #24<br>MODEM_ANT0<br>#23 MO-<br>DEM_ANT1 #22|CMU_CLK0 #6<br>PRS_CH0 #2<br>PRS_CH1 #1<br>PRS_CH2 #0<br>PRS_CH3 #7<br>ACMP0_O #26<br>ACMP1_O #26<br>DBG_TDO #0<br>DBG_SWO #0<br>GPIO_EM4WU0|
|**42**|PF3|BUSAY [ADC0:<br>APORT1YCH19<br>ACMP0:<br>APORT1YCH19<br>ACMP1:<br>APORT1YCH19]<br>BUSBX [ADC0:<br>APORT2XCH19<br>ACMP0:<br>APORT2XCH19<br>ACMP1:<br>APORT2XCH19]|TIM0_CC0 #27<br>TIM0_CC1 #26<br>TIM0_CC2 #25<br>TIM0_CDTI0 #24<br>TIM0_CDTI1 #23<br>TIM0_CDTI2 #22<br>TIM1_CC0 #27<br>TIM1_CC1 #26<br>TIM1_CC2 #25<br>TIM1_CC3 #24 LE-<br>TIM0_OUT0 #27<br>LETIM0_OUT1 #26<br>PCNT0_S0IN #27<br>PCNT0_S1IN #26|US0_TX #27<br>US0_RX #26<br>US0_CLK #25<br>US0_CS #24<br>US0_CTS #23<br>US0_RTS #22<br>US1_TX #27<br>US1_RX #26<br>US1_CLK #25<br>US1_CS #24<br>US1_CTS #23<br>US1_RTS #22<br>LEU0_TX #27<br>LEU0_RX #26<br>I2C0_SDA #27<br>I2C0_SCL #26|FRC_DCLK #27<br>FRC_DOUT #26<br>FRC_DFRAME #25<br>MODEM_DCLK<br>#27 MODEM_DIN<br>#26 MO-<br>DEM_DOUT #25<br>MODEM_ANT0<br>#24 MO-<br>DEM_ANT1 #23|CMU_CLK1 #6<br>PRS_CH0 #3<br>PRS_CH1 #2<br>PRS_CH2 #1<br>PRS_CH3 #0<br>ACMP0_O #27<br>ACMP1_O #27<br>DBG_TDI #0|
|**43**|PF4|BUSAX [ADC0:<br>APORT1XCH20<br>ACMP0:<br>APORT1XCH20<br>ACMP1:<br>APORT1XCH20]<br>BUSBY [ADC0:<br>APORT2YCH20<br>ACMP0:<br>APORT2YCH20<br>ACMP1:<br>APORT2YCH20]|TIM0_CC0 #28<br>TIM0_CC1 #27<br>TIM0_CC2 #26<br>TIM0_CDTI0 #25<br>TIM0_CDTI1 #24<br>TIM0_CDTI2 #23<br>TIM1_CC0 #28<br>TIM1_CC1 #27<br>TIM1_CC2 #26<br>TIM1_CC3 #25 LE-<br>TIM0_OUT0 #28<br>LETIM0_OUT1 #27<br>PCNT0_S0IN #28<br>PCNT0_S1IN #27|US0_TX #28<br>US0_RX #27<br>US0_CLK #26<br>US0_CS #25<br>US0_CTS #24<br>US0_RTS #23<br>US1_TX #28<br>US1_RX #27<br>US1_CLK #26<br>US1_CS #25<br>US1_CTS #24<br>US1_RTS #23<br>LEU0_TX #28<br>LEU0_RX #27<br>I2C0_SDA #28<br>I2C0_SCL #27|FRC_DCLK #28<br>FRC_DOUT #27<br>FRC_DFRAME #26<br>MODEM_DCLK<br>#28 MODEM_DIN<br>#27 MO-<br>DEM_DOUT #26<br>MODEM_ANT0<br>#25 MO-<br>DEM_ANT1 #24|PRS_CH0 #4<br>PRS_CH1 #3<br>PRS_CH2 #2<br>PRS_CH3 #1<br>ACMP0_O #28<br>ACMP1_O #28|



**silabs.com** | Building a more connected world. 

Rev. 1.3  |  62 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Pin Definitions 

|||**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|**Pin Alternate Functionality / Description**|
|---|---|---|---|---|---|---|
|**Pin #**|**Pin Name**|**Analog**|**Timers**|**Communication**|**Radio**|**Other**|
|**44**|PF5|BUSAY [ADC0:<br>APORT1YCH21<br>ACMP0:<br>APORT1YCH21<br>ACMP1:<br>APORT1YCH21]<br>BUSBX [ADC0:<br>APORT2XCH21<br>ACMP0:<br>APORT2XCH21<br>ACMP1:<br>APORT2XCH21]|TIM0_CC0 #29<br>TIM0_CC1 #28<br>TIM0_CC2 #27<br>TIM0_CDTI0 #26<br>TIM0_CDTI1 #25<br>TIM0_CDTI2 #24<br>TIM1_CC0 #29<br>TIM1_CC1 #28<br>TIM1_CC2 #27<br>TIM1_CC3 #26 LE-<br>TIM0_OUT0 #29<br>LETIM0_OUT1 #28<br>PCNT0_S0IN #29<br>PCNT0_S1IN #28|US0_TX #29<br>US0_RX #28<br>US0_CLK #27<br>US0_CS #26<br>US0_CTS #25<br>US0_RTS #24<br>US1_TX #29<br>US1_RX #28<br>US1_CLK #27<br>US1_CS #26<br>US1_CTS #25<br>US1_RTS #24<br>LEU0_TX #29<br>LEU0_RX #28<br>I2C0_SDA #29<br>I2C0_SCL #28|FRC_DCLK #29<br>FRC_DOUT #28<br>FRC_DFRAME #27<br>MODEM_DCLK<br>#29 MODEM_DIN<br>#28 MO-<br>DEM_DOUT #27<br>MODEM_ANT0<br>#26 MO-<br>DEM_ANT1 #25|PRS_CH0 #5<br>PRS_CH1 #4<br>PRS_CH2 #3<br>PRS_CH3 #2<br>ACMP0_O #29<br>ACMP1_O #29|
|**45**|PF6|BUSAX [ADC0:<br>APORT1XCH22<br>ACMP0:<br>APORT1XCH22<br>ACMP1:<br>APORT1XCH22]<br>BUSBY [ADC0:<br>APORT2YCH22<br>ACMP0:<br>APORT2YCH22<br>ACMP1:<br>APORT2YCH22]|TIM0_CC0 #30<br>TIM0_CC1 #29<br>TIM0_CC2 #28<br>TIM0_CDTI0 #27<br>TIM0_CDTI1 #26<br>TIM0_CDTI2 #25<br>TIM1_CC0 #30<br>TIM1_CC1 #29<br>TIM1_CC2 #28<br>TIM1_CC3 #27 LE-<br>TIM0_OUT0 #30<br>LETIM0_OUT1 #29<br>PCNT0_S0IN #30<br>PCNT0_S1IN #29|US0_TX #30<br>US0_RX #29<br>US0_CLK #28<br>US0_CS #27<br>US0_CTS #26<br>US0_RTS #25<br>US1_TX #30<br>US1_RX #29<br>US1_CLK #28<br>US1_CS #27<br>US1_CTS #26<br>US1_RTS #25<br>LEU0_TX #30<br>LEU0_RX #29<br>I2C0_SDA #30<br>I2C0_SCL #29|FRC_DCLK #30<br>FRC_DOUT #29<br>FRC_DFRAME #28<br>MODEM_DCLK<br>#30 MODEM_DIN<br>#29 MO-<br>DEM_DOUT #28<br>MODEM_ANT0<br>#27 MO-<br>DEM_ANT1 #26|CMU_CLK1 #7<br>PRS_CH0 #6<br>PRS_CH1 #5<br>PRS_CH2 #4<br>PRS_CH3 #3<br>ACMP0_O #30<br>ACMP1_O #30|
|**46**|PF7|BUSAY [ADC0:<br>APORT1YCH23<br>ACMP0:<br>APORT1YCH23<br>ACMP1:<br>APORT1YCH23]<br>BUSBX [ADC0:<br>APORT2XCH23<br>ACMP0:<br>APORT2XCH23<br>ACMP1:<br>APORT2XCH23]|TIM0_CC0 #31<br>TIM0_CC1 #30<br>TIM0_CC2 #29<br>TIM0_CDTI0 #28<br>TIM0_CDTI1 #27<br>TIM0_CDTI2 #26<br>TIM1_CC0 #31<br>TIM1_CC1 #30<br>TIM1_CC2 #29<br>TIM1_CC3 #28 LE-<br>TIM0_OUT0 #31<br>LETIM0_OUT1 #30<br>PCNT0_S0IN #31<br>PCNT0_S1IN #30|US0_TX #31<br>US0_RX #30<br>US0_CLK #29<br>US0_CS #28<br>US0_CTS #27<br>US0_RTS #26<br>US1_TX #31<br>US1_RX #30<br>US1_CLK #29<br>US1_CS #28<br>US1_CTS #27<br>US1_RTS #26<br>LEU0_TX #31<br>LEU0_RX #30<br>I2C0_SDA #31<br>I2C0_SCL #30|FRC_DCLK #31<br>FRC_DOUT #30<br>FRC_DFRAME #29<br>MODEM_DCLK<br>#31 MODEM_DIN<br>#30 MO-<br>DEM_DOUT #29<br>MODEM_ANT0<br>#28 MO-<br>DEM_ANT1 #27|CMU_CLK0 #7<br>PRS_CH0 #7<br>PRS_CH1 #6<br>PRS_CH2 #5<br>PRS_CH3 #4<br>ACMP0_O #31<br>ACMP1_O #31<br>GPIO_EM4WU1|



**silabs.com** | Building a more connected world. 

Rev. 1.3  |  63 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Pin Definitions 

## **7.1.1  GPIO Overview** 

The GPIO pins are organized as 16-bit ports indicated by letters A through F, and the individual pins on each port are indicated by a number from 15 down to 0. 

**Table 7.2.  GPIO Pinout** 

|**Port**|**Pin**<br>**15**|**Pin**<br>**14**|**Pin**<br>**13**|**Pin**<br>**12**|**Pin**<br>**11**|**Pin**<br>**10**|**Pin**<br>**9**|**Pin**<br>**8**|**Pin**<br>**7**|**Pin**<br>**6**|**Pin**<br>**5**|**Pin**<br>**4**|**Pin**<br>**3**|**Pin**<br>**2**|**Pin**<br>**1**|**Pin**<br>**0**|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|Port A|-|-|-|-|-|-|-|-|-|-|PA5<br>(5V)|PA4<br>(5V)|PA3<br>(5V)|PA2<br>(5V)|PA1|PA0|
|Port B|||PB13<br>2(5V)|PB12<br>2(5V)|PB11<br>2(5V)|-|-|-|-|-|-|-|-|-|-|-|
|Port C|-|-|-|-|PC11<br>(5V)|PC10<br>(5V)|PC9<br>(5V)|PC8<br>(5V)|PC7<br>(5V)|PC6<br>(5V)|-|-|-|-|-|-|
|Port D|PD15<br>2(5V)|PD14<br>2(5V)|PD13<br>2(5V)|PD12<br>(5V)|PD11<br>(5V)|PD10<br>(5V)|PD9<br>(5V)|-|-|-|-|-|-|-|-|-|
|Port F|-|-|-|-|-|-|-|-|PF7<br>(5V)|PF6<br>(5V)|PF5<br>(5V)|PF4<br>(5V)|PF3<br>(5V)|PF2<br>(5V)|PF1<br>(5V)|PF0<br>(5V)|
|**Note:**<br>1. GPIO with 5V compatibility are indicated by (5V)<br>2. Pins PA2, PA3, PA4, PB11, PB12, PD13, PD14 and PD15 will not be 5V compatible on all future devices.<br>In order to preserve upgrade options with full hardware compatibility, do not use the pins listed in Note 2 with 5V domains.|||||||||||||||||



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Rev. 1.3  |  64 

BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Pin Definitions 

## **7.2  Alternate Functionality Pinout** 

A wide selection of alternate functionality is available for multiplexing to various pins. The following table shows the name of the alternate functionality in the first column, followed by columns showing the possible LOCATION bitfield settings. 

**Note:** Some functionality, such as analog interfaces, do not have alternate settings or a LOCATION bitfield. In these cases, the pinout is shown in the column corresponding to LOCATION 0. 

**Table 7.3.  Alternate functionality overview** 

|**Alternate**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**||
|---|---|---|---|---|---|---|---|---|---|
|**Functionality**|**0 - 3**|**4 - 7**|**8 - 11**|**12 - 15**|**16 - 19**|**20 - 23**|**24 - 27**|**28 - 31**|**Description**|
|ACMP0_O|0: PA0<br>1: PA1<br>2: PA2<br>3: PA3|4: PA4<br>5: PA5<br>6: PB11<br>7: PB12|8: PB13<br>11: PC6|12: PC7<br>13: PC8<br>14: PC9<br>15: PC10|16: PC11<br>17: PD9<br>18: PD10<br>19: PD11|20: PD12<br>21: PD13<br>22: PD14<br>23: PD15|24: PF0<br>25: PF1<br>26: PF2<br>27: PF3|28: PF4<br>29: PF5<br>30: PF6<br>31: PF7|Analog comparator<br>ACMP0, digital out-<br>put.|
|ACMP1_O|0: PA0<br>1: PA1<br>2: PA2<br>3: PA3|4: PA4<br>5: PA5<br>6: PB11<br>7: PB12|8: PB13<br>11: PC6|12: PC7<br>13: PC8<br>14: PC9<br>15: PC10|16: PC11<br>17: PD9<br>18: PD10<br>19: PD11|20: PD12<br>21: PD13<br>22: PD14<br>23: PD15|24: PF0<br>25: PF1<br>26: PF2<br>27: PF3|28: PF4<br>29: PF5<br>30: PF6<br>31: PF7|Analog comparator<br>ACMP1, digital out-<br>put.|
|ADC0_EXTN|0: PA0||||||||Analog to digital<br>converter ADC0 ex-<br>ternal reference in-<br>put negative pin|
|ADC0_EXTP|0: PA1||||||||Analog to digital<br>converter ADC0 ex-<br>ternal reference in-<br>put positive pin|
|CMU_CLK0|0: PA1<br>2: PC6<br>3: PC11|4: PD9<br>5: PD14<br>6: PF2<br>7: PF7|||||||Clock Management<br>Unit, clock output<br>number 0.|
|CMU_CLK1|0: PA0<br>2: PC7<br>3: PC10|4: PD10<br>5: PD15<br>6: PF3<br>7: PF6|||||||Clock Management<br>Unit, clock output<br>number 1.|
|DBG_SWCLKTCK|0: PF0||||||||Debug-interface<br>Serial Wire clock<br>input and JTAG<br>Test Clock.<br>Note that this func-<br>tion is enabled to<br>the pin out of reset,<br>and has a built-in<br>pull down.|
|DBG_SWDIOTMS|0: PF1||||||||Debug-interface<br>Serial Wire data in-<br>put / output and<br>JTAG Test Mode<br>Select.<br>Note that this func-<br>tion is enabled to<br>the pin out of reset,<br>and has a built-in<br>pull up.|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet 

Pin Definitions 

|**Alternate**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**||
|---|---|---|---|---|---|---|---|---|---|
|**Functionality**|**0 - 3**|**4 - 7**|**8 - 11**|**12 - 15**|**16 - 19**|**20 - 23**|**24 - 27**|**28 - 31**|**Description**|
|DBG_SWO|0: PF2<br>1: PB13<br>2: PD15<br>3: PC11||||||||Debug-interface<br>Serial Wire viewer<br>Output.<br>Note that this func-<br>tion is not enabled<br>after reset, and<br>must be enabled by<br>software to be<br>used.|
|DBG_TDI|0: PF3||||||||Debug-interface<br>JTAG Test Data In.<br>Note that this func-<br>tion is enabled to<br>pin out of reset,<br>and has a built-in<br>pull up.|
|DBG_TDO|0: PF2||||||||Debug-interface<br>JTAG Test Data<br>Out.<br>Note that this func-<br>tion is enabled to<br>pin out of reset.|
|FRC_DCLK|0: PA0<br>1: PA1<br>2: PA2<br>3: PA3|4: PA4<br>5: PA5<br>6: PB11<br>7: PB12|8: PB13<br>11: PC6|12: PC7<br>13: PC8<br>14: PC9<br>15: PC10|16: PC11<br>18: PD10<br>19: PD11|20: PD12<br>21: PD13<br>22: PD14<br>23: PD15|24: PF0<br>25: PF1<br>26: PF2<br>27: PF3|28: PF4<br>29: PF5<br>30: PF6<br>31: PF7|Frame Controller,<br>Data Sniffer Clock.|
|FRC_DFRAME|0: PA2<br>1: PA3<br>2: PA4<br>3: PA5|4: PB11<br>5: PB12<br>6: PB13|9: PC6<br>10: PC7<br>11: PC8|12: PC9<br>13: PC10<br>14: PC11|16: PD10<br>17: PD11<br>18: PD12<br>19: PD13|20: PD14<br>21: PD15<br>22: PF0<br>23: PF1|24: PF2<br>25: PF3<br>26: PF4<br>27: PF5|28: PF6<br>29: PF7<br>30: PA0<br>31: PA1|Frame Controller,<br>Data Sniffer Frame<br>active|
|FRC_DOUT|0: PA1<br>1: PA2<br>2: PA3<br>3: PA4|4: PA5<br>5: PB11<br>6: PB12<br>7: PB13|10: PC6<br>11: PC7|12: PC8<br>13: PC9<br>14: PC10<br>15: PC11|17: PD10<br>18: PD11<br>19:PD12|20: PD13<br>21: PD14<br>22: PD15<br>23: PF0|24: PF1<br>25: PF2<br>26: PF3<br>27: PF4|28: PF5<br>29: PF6<br>30: PF7<br>31: PA0|Frame Controller,<br>Data Sniffer Out-<br>put.|
|GPIO_EM4WU0|0: PF2||||||||Pin can be used to<br>wake the system<br>up from EM4|
|GPIO_EM4WU1|0: PF7||||||||Pin can be used to<br>wake the system<br>up from EM4|
|GPIO_EM4WU4|0: PD14||||||||Pin can be used to<br>wake the system<br>up from EM4|
|GPIO_EM4WU8|0: PA3||||||||Pin can be used to<br>wake the system<br>up from EM4|
|GPIO_EM4WU9|0: PB13||||||||Pin can be used to<br>wake the system<br>up from EM4|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet 

Pin Definitions 

|**Alternate**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**||
|---|---|---|---|---|---|---|---|---|---|
|**Functionality**|**0 - 3**|**4 - 7**|**8 - 11**|**12 - 15**|**16 - 19**|**20 - 23**|**24 - 27**|**28 - 31**|**Description**|
|GPIO_EM4WU12|0: PC10||||||||Pin can be used to<br>wake the system<br>up from EM4|
|I2C0_SCL|0: PA1<br>1: PA2<br>2: PA3<br>3: PA4|4: PA5<br>5: PB11<br>6: PB12<br>7: PB13|10: PC6<br>11: PC7|12: PC8<br>13: PC9<br>14: PC10<br>15: PC11|16: PD9<br>17: PD10<br>18: PD11<br>19: PD12|20: PD13<br>21: PD14<br>22: PD15<br>23: PF0|24: PF1<br>25: PF2<br>26: PF3<br>27: PF4|28: PF5<br>29: PF6<br>30: PF7<br>31: PA0|I2C0 Serial Clock<br>Line input / output.|
|I2C0_SDA|0: PA0<br>1: PA1<br>2: PA2<br>3: PA3|4: PA4<br>5: PA5<br>6: PB11<br>7: PB12|8: PB13<br>11: PC6|12: PC7<br>13: PC8<br>14: PC9<br>15: PC10|16: PC11<br>17: PD9<br>18: PD10<br>19: PD11|20: PD12<br>21: PD13<br>22: PD14<br>23: PD15|24: PF0<br>25: PF1<br>26: PF2<br>27: PF3|28: PF4<br>29: PF5<br>30: PF6<br>31: PF7|I2C0 Serial Data in-<br>put / output.|
|LETIM0_OUT0|0: PA0<br>1: PA1<br>2: PA2<br>3: PA3|4: PA4<br>5: PA5<br>6: PB11<br>7: PB12|8: PB13<br>11: PC6|12: PC8<br>13: PC9<br>14: PC10<br>15: PC11|16: PC11<br>17: PD9<br>18: PD10<br>19: PD11|20: PD12<br>21: PD13<br>22: PD14<br>23: PD15|24: PF0<br>25: PF1<br>26: PF2<br>27: PF3|28: PF4<br>29: PF5<br>30: PF6<br>31: PF7|Low Energy Timer<br>LETIM0, output<br>channel 0.|
|LETIM0_OUT1|0: PA1<br>1: PA2<br>2: PA3<br>3: PA4|4: PA5<br>5: PB11<br>6: PB12<br>7: PB13|10: PC6<br>11: PC7|12: PC8<br>13: PC9<br>14: PC10<br>15: PC11|16: PD9<br>17: PD10<br>18: PD11<br>19: PD12|20: PD13<br>21: PD14<br>22: PD15<br>23: PF0|24: PF1<br>25: PF2<br>26: PF3<br>27: PF4|28: PF5<br>29: PF6<br>30: PF7<br>31: PA0|Low Energy Timer<br>LETIM0, output<br>channel 1.|
|LEU0_RX|0: PA1<br>1: PA2<br>2: PA3<br>3: PA4|4: PA5<br>5: PB11<br>6: PB12<br>7: PB13|10: PC6<br>11: PC7|12: PC8<br>13: PC9<br>14: PC10<br>15: PC11|16: PD9<br>17: PD10<br>18: PD11<br>19: PD12|20: PD13<br>21: PD14<br>22: PD15<br>23: PF0|24: PF1<br>25: PF2<br>26: PF3<br>27: PF4|28: PF5<br>29: PF6<br>30: PF7<br>31: PA0|LEUART0 Receive<br>input.|
|LEU0_TX|0: PA0<br>1: PA1<br>2: PA2<br>3: PA3|4: PA4<br>5: PA5<br>6: PB11<br>7: PB12|8: PB13<br>11: PC6|12: PC7<br>13: PC8<br>14: PC9<br>15: PC10|16: PC11<br>17: PD9<br>18: PD10<br>19: PD11|20: PD12<br>21: PD13<br>22: PD14<br>23: PD15|24: PF0<br>25: PF1<br>26: PF2<br>27: PF3|28: PF4<br>29: PF5<br>30: PF6<br>31: PF7|LEUART0 Transmit<br>output. Also used<br>as receive input in<br>half duplex commu-<br>nication.|
|LFXTAL_N|||||||||Connected internal-<br>ly to a Low Fre-<br>quency Crystal<br>(32.768 kHz).<br>Leave unconnected<br>externally.|
|LFXTAL_P|||||||||Connected internal-<br>ly to a Low Fre-<br>quency Crystal<br>(32.768 kHz).<br>Leave unconnected<br>externally.|
|MODEM_ANT0|0: PA3<br>1: PA4<br>2: PA5<br>3: PB11|4: PB12<br>5: PB13|8: PC6<br>9: PC7<br>10: PC8<br>11: PC9|12: PC10<br>13: PC11<br>15: PD10|16: PD11<br>17: PD12<br>18: PD13<br>19: PD14|20: PD15<br>21: PF0<br>22: PF1<br>23: PF2|24: PF3<br>25: PF4<br>26: PF5<br>27: PF6|28: PF7<br>29: PA0<br>30: PA1<br>31: PA2|MODEM antenna<br>control output 0,<br>used for antenna<br>diversity.|
|MODEM_ANT1|0: PA4<br>1: PA5<br>2: PB11<br>3: PB12|4: PB13<br>7: PC6|8: PC7<br>9: PC8<br>10: PC9<br>11: PC11|12: PC11<br>14: PD10<br>15: PD11|16: PD12<br>17: PD13<br>18: PD14<br>19: PD15|20: PF0<br>21: PF1<br>22: PF2<br>23: PF3|24: PF4<br>25: PF5<br>26: PF6<br>27: PF7|28: PA0<br>29: PA1<br>30: PA2<br>31: PA3|MODEM antenna<br>control output 1,<br>used for antenna<br>diversity.|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet 

Pin Definitions 

|**Alternate**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**||
|---|---|---|---|---|---|---|---|---|---|
|**Functionality**|**0 - 3**|**4 - 7**|**8 - 11**|**12 - 15**|**16 - 19**|**20 - 23**|**24 - 27**|**28 - 31**|**Description**|
|MODEM_DCLK|0: PA0<br>1: PA1<br>2: PA2<br>3: PA3|4: PA4<br>5: PA5<br>6: PB11<br>7: PB12|8: PB13<br>11: PC6|12: PC7<br>13: PC8<br>14: PC9<br>15: PC10|16: PC11<br>18: PD10<br>19: PD11|20: PD12<br>21: PD13<br>22: PD14<br>23: PD15|24: PF0<br>25: PF1<br>26: PF2<br>27: PF3|28: PF4<br>29: PF5<br>30: PF6<br>31: PF7|MODEM data clock<br>out.|
|MODEM_DIN|0: PA1<br>1: PA2<br>2: PA3<br>3: PA4|4: PA5<br>5: PB11<br>6: PB12<br>7: PB13|10: PC6<br>11: PC7|12: PC8<br>13: PC9<br>14: PC10<br>15: PC11|17: PD10<br>18: PD11<br>19: PD12|20: PD13<br>21: PD14<br>22: PD15<br>23: PF0|24: PF1<br>25: PF2<br>26: PF3<br>27: PF4|28: PF5<br>29: PF6<br>30: PF7<br>31: PA0|MODEM data in.|
|MODEM_DOUT|0: PA2<br>1: PA3<br>2: PA4<br>3:PA5|4: PB11<br>5: PB12<br>6: PB13|9: PC6<br>10: PC7<br>11: PC8|12: PC9<br>13: PC10<br>14: PC11|16: PD10<br>17: PD11<br>18: PD12<br>19: PD13|20: PD14<br>21: PD15<br>22: PF0<br>23: PF1|24: PF2<br>25: PF3<br>26: PF4<br>27: PF5|28: PF6<br>29: PF7<br>30: PA0<br>31: PA1|MODEM data out.|
|PCNT0_S0IN|0: PA0<br>1: PA1<br>2: PA2<br>3: PA3|4: PA4<br>5: PA5<br>6: PB11<br>7: PB12|8: PB13<br>11: PC6|12: PC7<br>13: PC8<br>14: PC9<br>15: PC10|16: PC11<br>17: PD9<br>18: PD10<br>19: PD11|20: PD12<br>21: PD13<br>22: PD14<br>23: PD15|24: PF0<br>25: PF1<br>26: PF2<br>27: PF3|28: PF4<br>29: PF5<br>30: PF6<br>31: PF7|Pulse Counter<br>PCNT0 input num-<br>ber 0.|
|PCNT0_S1IN|0: PA1<br>1: PA2<br>2: PA3<br>3: PA4|4: PA5<br>5: PB11<br>6: PB12<br>7: PB13|10: PC6<br>11: PC7|12: PC8<br>13: PC9<br>14: PC10<br>15: PC11|16: PD9<br>17: PD10<br>18: PD11<br>19: PD12|20: PD13<br>21: PD14<br>22: PD15<br>23: PF0|24: PF1<br>25: PF2<br>26: PF3<br>27: PF4|28: PF5<br>29: PF6<br>30: PF7<br>31: PA0|Pulse Counter<br>PCNT0 input num-<br>ber 1.|
|PRS_CH0|0: PF0<br>1: PF1<br>2: PF2<br>3: PF3|4: PF4<br>5: PF5<br>6: PF6<br>7: PF7|8: PC6<br>9: PC7<br>10: PC8<br>11: PC9|12: PC10<br>13: PC11|||||Peripheral Reflex<br>System PRS, chan-<br>nel 0.|
|PRS_CH1|0: PF1<br>1: PF2<br>2: PF3<br>3: PF4|4: PF5<br>5: PF6<br>6: PF7<br>7: PF0|||||||Peripheral Reflex<br>System PRS, chan-<br>nel 1.|
|PRS_CH2|0: PF2<br>1: PF3<br>2: PF4<br>3: PF5|4: PF6<br>5: PF7<br>6: PF0<br>7: PF1|||||||Peripheral Reflex<br>System PRS, chan-<br>nel 2.|
|PRS_CH3|0: PF3<br>1: PF4<br>2: PF5<br>3: PF6|4: PF7<br>5: PF0<br>6: PF1<br>7: PF2|8: PD9<br>9: PD10<br>10: PD11<br>11: PD12|12: PD13<br>13: PD14<br>14: PD15|||||Peripheral Reflex<br>System PRS, chan-<br>nel 3.|
|PRS_CH4|0: PD9<br>1: PD10<br>2: PD11<br>3: PD12|4: PD13<br>5: PD14<br>6: PD15|||||||Peripheral Reflex<br>System PRS, chan-<br>nel 4.|
|PRS_CH5|0: PD10<br>1: PD11<br>2: PD12<br>3: PD13|4: PD14<br>5: PD15<br>6: PD9|||||||Peripheral Reflex<br>System PRS, chan-<br>nel 5.|
|PRS_CH6|0: PA0<br>1: PA1<br>2: PA2<br>3: PA3|4: PA4<br>5. PA5<br>6: PB11<br>7: PB12|8: PB13<br>11: PD9|12: PD10<br>13: PD11<br>14: PD12<br>15: PD13|16: PD14<br>17: PD15||||Peripheral Reflex<br>System PRS, chan-<br>nel 6.|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet 

Pin Definitions 

|**Alternate**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**||
|---|---|---|---|---|---|---|---|---|---|
|**Functionality**|**0 - 3**|**4 - 7**|**8 - 11**|**12 - 15**|**16 - 19**|**20 - 23**|**24 - 27**|**28 - 31**|**Description**|
|PRS_CH7|0: PA1<br>1: PA2<br>2: PA3<br>3: PA4|4: PA5<br>5: PB11<br>6: PB12<br>7: PB13|10: PA0||||||Peripheral Reflex<br>System PRS, chan-<br>nel 7.|
|PRS_CH8|0: PA2<br>1: PA3<br>2: PA4<br>3: PA5|4: PB11<br>5: PB12<br>6: PB13|9: PA0<br>10: PA1||||||Peripheral Reflex<br>System PRS, chan-<br>nel 8.|
|PRS_CH9|0: PA3<br>1: PA4<br>2: PA5<br>3: PB11|4: PB12<br>5: PB13|8: PA0<br>9: PA1<br>10: PA2<br>11: PC6|12: PC7<br>13: PC8<br>14: PC9<br>15: PC10|16: PC11||||Peripheral Reflex<br>System PRS, chan-<br>nel 9.|
|PRS_CH10|0: PC6<br>1: PC7<br>2: PC8<br>3: PC9|4: PC10<br>5: PC11|||||||Peripheral Reflex<br>System PRS, chan-<br>nel 10.|
|PRS_CH11|0: PC7<br>1: PC8<br>2: PC9<br>3: PC10|4: PC11<br>5: PC6|||||||Peripheral Reflex<br>System PRS, chan-<br>nel 11.|
|TIM0_CC0|0: PA0<br>1: PA1<br>2: PA2<br>3: PA3|4: PA4<br>5: PA5<br>6: PB11<br>7: PB12|8: PB13<br>11: PC6|12: PC7<br>13: PC8<br>14: PC9<br>15: PC10|16: PC11<br>17: PD9<br>18: PD10<br>19: PD11|20: PD12<br>21: PD13<br>22: PD14<br>23: PD15|24: PF0<br>25: PF1<br>26: PF2<br>27: PF3|28: PF4<br>29: PF5<br>30: PF6<br>31: PF7|Timer 0 Capture<br>Compare input /<br>output channel 0.|
|TIM0_CC1|0: PA1<br>1: PA2<br>2: PA3<br>3: PA4|4: PA5<br>5: PB11<br>6: PB12<br>7: PB13|10: PC6<br>11: PC7|12: PC8<br>13: PC9<br>14: PC10<br>15: PC11|16: PD9<br>17: PD10<br>18: PD11<br>19: PD12|20: PD13<br>21: PD14<br>22: PD15<br>23: PF0|24: PF1<br>25: PF12<br>26: PF3<br>27: PF4|28: PF5<br>29: PF6<br>30: PF7<br>31: PA0|Timer 0 Capture<br>Compare input /<br>output channel 1.|
|TIM0_CC2|0: PA2<br>1: PA3<br>2: PA4<br>3: PA5|4: PB11<br>5: PB12<br>6: PB13|9: PC6<br>10: PC7<br>11: PC8|12: PC9<br>13: PC10<br>14: PC11<br>15: PD9|16: PD10<br>17: PD11<br>18: PD12<br>19: PD13|20: PD14<br>21: PD15<br>22: PF0<br>23: PF1|24: PF2<br>25: PF3<br>26: PF4<br>27: PF5|28: PF6<br>29: PF7<br>30: PA0<br>31: PA1|Timer 0 Capture<br>Compare input /<br>output channel 2.|
|TIM0_CDTI0|0: PA3<br>1: PA4<br>2: PA5<br>3: PB11|4: PB12<br>5: PB13|8: PC6<br>9: PC7<br>10: PC8<br>11: PC9|12: PC10<br>13: PC11<br>14: PD9<br>15: PD10|16: PD11<br>17: PD12<br>18: PD13<br>19: PD14|20: PD15<br>21: PF0<br>22: PF1<br>23: PF2|24: PF3<br>25: PF4<br>26: PF5<br>27: PF6|28: PF7<br>29: PA0<br>30: PA1<br>31: PA2|Timer 0 Compli-<br>mentary Dead Time<br>Insertion channel 0.|
|TIM0_CDTI1|0: PA4<br>1: PA5<br>2: PB11<br>3: PB12|4: PB13<br>7: PC6|8: PC7<br>9: PC8<br>10: PC9<br>11: PC10|12: PC11<br>13: PD9<br>14: PD10<br>15: PD11|16: PD12<br>17: PD13<br>18: PD14<br>19: PD15|20: PF0<br>21: PF1<br>22: PF2<br>23: PF3|24: PF4<br>25: PF5<br>26: PF6<br>27: PF7|28: PA0<br>29: PA1<br>30: PA2<br>31: PA3|Timer 0 Compli-<br>mentary Dead Time<br>Insertion channel 1.|
|TIM0_CDTI2|0: PA5<br>1: PB11<br>2: PB12<br>3: PB13|6: PC6<br>7: PC7|8: PC8<br>9: PC9<br>10: PC10<br>11: PC11|12: PD9<br>13: PD10<br>14: PD11<br>15: PD12|16: PD13<br>17: PD14<br>18: PD15<br>19: PF0|20: PF1<br>21: PF2<br>22: PF3<br>23: PF4|24: PF5<br>25: PF6<br>26: PF7<br>27: PA0|28: PA1<br>29: PA2<br>30: PA3<br>31: PA4|Timer 0 Compli-<br>mentary Dead Time<br>Insertion channel 2.|
|TIM1_CC0|0: PA0<br>1: PA1<br>2: PA2<br>3: PA3|4: PA4<br>5: PA5<br>6: PB11<br>7: PB12|8: PB13<br>11: PC6|12: PC7<br>13: PC8<br>14: PC9<br>15: PC10|16: PC11<br>17: PD9<br>18: PD10<br>19: PD11|20: PD12<br>21: PD13<br>22: PD14<br>23: PD15|24: PF0<br>25: PF1<br>26: PF2<br>27: PF3|28: PF4<br>29: PF5<br>30: PF6<br>31: PF7|Timer 1 Capture<br>Compare input /<br>output channel 0.|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet 

Pin Definitions 

|**Alternate**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**||
|---|---|---|---|---|---|---|---|---|---|
|**Functionality**|**0 - 3**|**4 - 7**|**8 - 11**|**12 - 15**|**16 - 19**|**20 - 23**|**24 - 27**|**28 - 31**|**Description**|
|TIM1_CC1|0: PA1<br>1: PA2<br>2: PA3<br>3: PA4|4: PA5<br>5: PB11<br>6: PB12<br>7: PB13|10: PC6<br>11: PC7|12: PC8<br>13: PC9<br>14: PC10<br>15: PC11|16: PD9<br>17: PD10<br>18: PD11<br>19: PD12|20: PD13<br>21: PD14<br>22: PD15<br>23: PF0|24: PF1<br>225: PF2<br>26: PF3<br>27: PF4|28: PF5<br>29: PF6<br>30: PF7<br>31: PA0|Timer 1 Capture<br>Compare input /<br>output channel 1.|
|TIM1_CC2|0: PA2<br>1: PA3<br>2: PA4<br>3: PA5|4: PB11<br>5: PB12<br>6: PB13|9: PC6<br>10: PC7<br>11: PC8|12: PC9<br>13: PC10<br>14: PC11<br>15: PD9|16: PD10<br>17: PD11<br>18: PD12<br>19: PD13|20: PD14<br>21: PD15<br>22: PF0<br>23: PF1|24: PF2<br>25: PF3<br>26: PF4<br>27: PF5|28: PF6<br>29: PF7<br>30: PA0<br>31: PA1|Timer 1 Capture<br>Compare input /<br>output channel 2.|
|TIM1_CC3|0: PA3<br>1: PA4<br>2: PA5<br>3: PB11|4: PB12<br>5: PB13|8: PC6<br>9: PC7<br>10: PC8<br>11: PC9|12: PC10<br>13: PC11<br>14: PD9<br>15: PD10|16: PD11<br>17: PD12<br>18: PD13<br>19: PD14|20: PD15<br>21: PF0<br>22: PF1<br>23: PF2|24: PF3<br>25: PF4<br>26: PF5<br>27: PF6|28: PF7<br>29: PA0<br>30: PA1<br>31: PA2|Timer 1 Capture<br>Compare input /<br>output channel 3.|
|US0_CLK|0: PA2<br>1: PA3<br>2: PA4<br>3: PA5|4: PB11<br>5: PB12<br>6: PB13|9: PC6<br>10: PC7<br>11: PC8|12: PC9<br>13: PC10<br>14: PC11<br>15: PD9|16: PD10<br>17: PD11<br>18: PD12<br>19: PD13|20: PD14<br>21: PD15<br>22: PF0<br>23: PF1|24: PF2<br>25: PF3<br>26: PF4<br>27: PF5|28: PF6<br>29: PF7<br>30: PA0<br>31: PA1|USART0 clock in-<br>put / output.|
|US0_CS|0: PA3<br>1: PA4<br>2: PA5<br>3: PB11|4: PB12<br>5: PB13|8: PC6<br>9: PC7<br>10: PC8<br>11: PC9|12: PC10<br>13: PC11<br>14: PD9<br>15: PD10|16: PD11<br>17: PD12<br>18: PD13<br>19: PD14|20: PD15<br>21: PF0<br>22: PF1<br>23: PF2|24: PF3<br>25: PF4<br>26: PF5<br>27: PF6|28: PF7<br>29: PA0<br>30: PA1<br>31: PA2|USART0 chip se-<br>lect input / output.|
|US0_CTS|0: PA4<br>1: PA5<br>2: PB11<br>3: PB12|4: PB13<br>7: PC6|8: PC7<br>9: PC8<br>10: PC9<br>11: PC10|12: PC11<br>13: PD9<br>14: PD10<br>15: PD11|16: PD12<br>17: PD13<br>18: PD14<br>19: PD15|20: PF0<br>21: PF1<br>22: PF2<br>23: PF3|24: PF4<br>25: PF5<br>26: PF6<br>27: PF7|28: PA0<br>29: PA1<br>30: PA2<br>31: PA3|USART0 Clear To<br>Send hardware<br>flow control input.|
|US0_RTS|0: PA5<br>1: PB11<br>2: PB12<br>3: PB13|6: PC6<br>7: PC7|8: PC8<br>9: PC9<br>10: PC10<br>11: PC11|12: PD9<br>13: PD10<br>14: PD11<br>15: PD12|16: PD13<br>17: PD14<br>18: PD15<br>19: PF0|20: PF1<br>21: PF2<br>22: PF3<br>23: PF4|24: PF5<br>25: PF6<br>26: PF7<br>27: PA0|28: PA1<br>29: PA2<br>30: PA3<br>31: PA4|USART0 Request<br>To Send hardware<br>flow control output.|
|US0_RX|0: PA1<br>1: PA2<br>2: PA3<br>3: PA4|4: PA5<br>5: PB11<br>6: PB12<br>7: PB13|10: PC6<br>11: PC7|12: PC8<br>13: PC9<br>14: PC10<br>15: PC11|16: PD9<br>17: PD10<br>18: PD11<br>19: PD12|20: PD13<br>21: PD14<br>22: PD15<br>23: PF0|24: PF1<br>25: PF2<br>26: PF3<br>27: PF4|28: PF5<br>29: PF6<br>30: PF7<br>31: PA0|USART0 Asynchro-<br>nous Receive.<br>USART0 Synchro-<br>nous mode Master<br>Input / Slave Out-<br>put (MISO).|
|US0_TX|0: PA0<br>1: PA1<br>2: PA2<br>3: PA3|4: PA4<br>5: PA5<br>6: PB11<br>7: PB12|8: PB13<br>11: PC6|12: PC7<br>13: PC8<br>14: PC9<br>15: PC10|16: PC11<br>17: PD9<br>18: PD10<br>19: PD11|20: PD12<br>21: PD13<br>22: PD14<br>23: PD15|24: PF0<br>25: PF1<br>26: PF2<br>27: PF3|28: PF4<br>29: PF5<br>30: PF6<br>31: PF7|USART0 Asynchro-<br>nous Transmit. Al-<br>so used as receive<br>input in half duplex<br>communication.<br>USART0 Synchro-<br>nous mode Master<br>Output / Slave In-<br>put (MOSI).|
|US1_CLK|0: PA2<br>1: PA3<br>2: PA4<br>3: PA5|4: PB11<br>5: PB12<br>6: PB13|9: PC6<br>10: PC7<br>11: PC8|12: PC9<br>13: PC10<br>14: PC11<br>15: PD9|16: PD10<br>17: PD11<br>18: PD12<br>19: PD13|20: PD14<br>21: PD15<br>22: PF0<br>23: PF1|24: PF2<br>25: PF3<br>26: PF4<br>27: PF5|28: PF6<br>29: PF7<br>30: PA0<br>31: PA1|USART1 clock in-<br>put / output.|
|US1_CS|0: PA3<br>1: PA4<br>2: PA5<br>3: PB11|4: PB12<br>5: PB13|8: PC6<br>9: PC7<br>10: PC8<br>11: PC9|12: PC10<br>13: PC11<br>14: PD9<br>15: PD10|16: PD11<br>17: PD12<br>18: PD13<br>19: PD14|20: PD15<br>21: PF0<br>22: PF1<br>23: PF2|24: PF3<br>25: PF4<br>26: PF5<br>27: PF6|28: PF7<br>29: PA0<br>30: PA1<br>31: PA2|USART1 chip se-<br>lect input / output.|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Pin Definitions 

|**Alternate**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**|**LOCATION**||
|---|---|---|---|---|---|---|---|---|---|
|**Functionality**|**0 - 3**|**4 - 7**|**8 - 11**|**12 - 15**|**16 - 19**|**20 - 23**|**24 - 27**|**28 - 31**|**Description**|
|US1_CTS|0: PA4<br>1: PA5<br>2: PB11<br>3: PB12|4: PB13<br>7: PC6|8: PC7<br>9: PC8<br>10: PC9<br>11: PC10|12: PC11<br>13: PD9<br>14: PD10<br>15: PD11|16: PD12<br>17: PD13<br>18: PD14<br>19: PD15|20: PF0<br>21: PF1<br>22: PF2<br>23: PF3|24: PF4<br>25: PF5<br>26: PF6<br>27: PF7|28: PA0<br>29: PA1<br>30: PA2<br>31: PA3|USART1 Clear To<br>Send hardware<br>flow control input.|
|US1_RTS|0: PA5<br>1: PB11<br>2: PB12<br>3: PB13|6: PC6<br>7: PC7|8: PC8<br>9: PC9<br>10: PC10<br>11: PC11|12: PD9<br>13: PD10<br>14: PD11<br>15: PD12|16: PD13<br>17: PD14<br>18: PD15<br>19: PF0|20: PF1<br>21: PF2<br>22: PF3<br>23: PF4|24: PF5<br>25: PF6<br>26: PF7<br>27: PA0|28: PA1<br>29: PA2<br>30: PA3<br>31: PA4|USART1 Request<br>To Send hardware<br>flow control output.|
|US1_RX|0: PA1<br>1: PA2<br>2: PA3<br>3: PA4|4: PA5<br>5: PB11<br>6: PB12<br>7: PB13|10: PC6<br>11: PC7|12: PC8<br>13: PC9<br>14: PC10<br>15: PC11|16: PD9<br>17: PD10<br>18: PD11<br>19: PD12|20: PD13<br>21: PD14<br>22: PD15<br>23: PF0|24: PF1<br>25: PF2<br>26: PF3<br>27: PF4|28: PF5<br>29: PF6<br>30: PF7<br>31: PA0|USART1 Asynchro-<br>nous Receive.<br>USART1 Synchro-<br>nous mode Master<br>Input / Slave Out-<br>put (MISO).|
|US1_TX|0: PA0<br>1: PA1<br>2: PA2<br>3: PA3|4: PA4<br>5: PA5<br>6: PB11<br>7: PB12|8: PB13<br>11: PC6|12: PC7<br>13: PC8<br>14: PC9<br>15: PC10|16: PC11<br>17: PD9<br>18: PD10<br>19: PD11|20: PD12<br>21: PD13<br>22: PD14<br>23: PD15|24: PF0<br>25: PF1<br>26: PF2<br>27: PF3|28: PF4<br>29: PF5<br>30: PF6<br>31: PF7|USART1 Asynchro-<br>nous Transmit. Al-<br>so used as receive<br>input in half duplex<br>communication.<br>USART1 Synchro-<br>nous mode Master<br>Output / Slave In-<br>put (MOSI).|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Pin Definitions 

## **7.3  Analog Port (APORT)** 

The Analog Port (APORT) is an infrastructure used to connect chip pins with on-chip analog clients such as analog comparators, ADCs, and DACs. The APORT consists of wires, switches, and control needed to configurably implement the routes. Please see the device Reference Manual for a complete description. 

**==> picture [520 x 586] intentionally omitted <==**

**----- Start of picture text -----**<br>
PC6<br>BUSAX<br>PC8<br>PC10<br>PF0<br>PF2<br>PF4<br>PF6<br>BUSBY<br>PC7<br>BUSAY<br>PC9<br>PC11<br>PF1<br>PF3<br>PF5<br>PF7<br>BUSBX<br>PD10<br>BUSCX<br>PD12<br>PD14<br>PA0<br>PA2<br>PA4<br>PB12<br>BUSDY<br>PD11<br>BUSCY<br>PD13<br>PD15<br>PA1<br>PA3<br>PA5<br>PB11<br>PB13<br>BUSDX<br>1X1Y2X2Y3X3Y4X4Y 1X1Y2X2Y3X3Y4X4Y 1X1Y2X2Y3X3Y4X4Y 1X1Y<br>ACMP0 ACMP1 ADC0 IDAC0<br>**----- End of picture text -----**<br>


**Figure 7.2.  BGM121/BGM123 APORT** 

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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Pin Definitions 

## **Table 7.4.   APORT Client Map** 

|**Analog Module**|**Analog Module Channel**|**Shared Bus**|**Pin**|
|---|---|---|---|
|ACMP0|APORT1XCH6|BUSAX|PC6|
||APORT1XCH8||PC8|
||APORT1XCH10||PC10|
||APORT1XCH16||PF0|
||APORT1XCH18||PF2|
||APORT1XCH20||PF4|
||APORT1XCH22||PF6|
|ACMP0|APORT1YCH7|BUSAY|PC7|
||APORT1YCH9||PC9|
||APORT1YCH11||PC11|
||APORT1YCH17||PF1|
||APORT1YCH19||PF3|
||APORT1YCH21||PF5|
||APORT1YCH23||PF7|
|ACMP0|APORT2XCH7|BUSBX|PC7|
||APORT2XCH9||PC9|
||APORT2XCH11||PC11|
||APORT2XCH17||PF1|
||APORT2XCH19||PF3|
||APORT2XCH21||PF5|
||APORT2XCH23||PF7|
|ACMP0|APORT2YCH6|BUSBY|PC6|
||APORT2YCH8||PC8|
||APORT2YCH10||PC10|
||APORT2YCH16||PF0|
||APORT2YCH18||PF2|
||APORT2YCH20||PF4|
||APORT2YCH22||PF6|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet 

Pin Definitions 

|**Analog Module**|**Analog Module Channel**|**Shared Bus**|**Pin**|
|---|---|---|---|
|ACMP0|APORT3XCH2|BUSCX||
||APORT3XCH4|||
||APORT3XCH6||PD14|
||APORT3XCH8||PA0|
||APORT3XCH10||PA2|
||APORT3XCH12||PA4|
||APORT3XCH28|||
||APORT3XCH30|||
|ACMP0|APORT3YCH3|BUSCY||
||APORT3YCH5||PD13|
||APORT3YCH7||PD15|
||APORT3YCH9||PA1|
||APORT3YCH11||PA3|
||APORT3YCH13||PA5|
||APORT3YCH27||PB11|
||APORT3YCH29||PB13|
||APORT3YCH31|||
|ACMP0|APORT4XCH3|BUSDX||
||APORT4XCH5||PD13|
||APORT4XCH7||PD15|
||APORT4XCH9||PA1|
||APORT4XCH11||PA3|
||APORT4XCH13||PA5|
||APORT4XCH27||PB11|
||APORT4XCH29||PB13|
||APORT4XCH31|||
|ACMP0|APORT4YCH2|BUSDY||
||APORT4YCH4|||
||APORT4YCH6||PD14|
||APORT4YCH8||PA0|
||APORT4YCH10||PA2|
||APORT4YCH12||PA4|
||APORT4YCH28|||
||APORT4YCH30|||



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet 

Pin Definitions 

|**Analog Module**|**Analog Module Channel**|**Shared Bus**|**Pin**|
|---|---|---|---|
|ACMP1|APORT1XCH6|BUSAX|PC6|
||APORT1XCH8||PC8|
||APORT1XCH10||PC10|
||APORT1XCH16||PF0|
||APORT1XCH18||PF2|
||APORT1XCH20||PF4|
||APORT1XCH22||PF6|
|ACMP1|APORT1YCH7|BUSAY|PC7|
||APORT1YCH9||PC9|
||APORT1YCH11||PC11|
||APORT1YCH17||PF1|
||APORT1YCH19||PF3|
||APORT1YCH21||PF5|
||APORT1YCH23||PF7|
|ACMP1|APORT2XCH7|BUSBX|PC7|
||APORT2XCH9||PC9|
||APORT2XCH11||PC11|
||APORT2XCH17||PF1|
||APORT2XCH19||PF3|
||APORT2XCH21||PF5|
||APORT2XCH23||PF7|
|ACMP1|APORT2YCH6|BUSBY|PC6|
||APORT2YCH8||PC8|
||APORT2YCH10||PC10|
||APORT2YCH16||PF0|
||APORT2YCH18||PF2|
||APORT2YCH20||PF4|
||APORT2YCH22||PF6|
|ACMP1|APORT3XCH2|BUSCX||
||APORT3XCH4|||
||APORT3XCH6||PD14|
||APORT3XCH8||PA0|
||APORT3XCH10||PA2|
||APORT3XCH12||PA4|
||APORT3XCH28|||
||APORT3XCH30|||



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet 

Pin Definitions 

|**Analog Module**|**Analog Module Channel**|**Shared Bus**|**Pin**|
|---|---|---|---|
|ACMP1|APORT3YCH3|BUSCY||
||APORT3YCH5||PD13|
||APORT3YCH7||PD15|
||APORT3YCH9||PA1|
||APORT3YCH11||PA3|
||APORT3YCH13||PA5|
||APORT3YCH27||PB11|
||APORT3YCH29||PB13|
||APORT3YCH31|||
|ACMP1|APORT4XCH3|BUSDX||
||APORT4XCH5||PD13|
||APORT4XCH7||PD15|
||APORT4XCH9||PA1|
||APORT4XCH11||PA3|
||APORT4XCH13||PA5|
||APORT4XCH27||PB11|
||APORT4XCH29||PB13|
||APORT4XCH31|||
|ACMP1|APORT4YCH2|BUSDY||
||APORT4YCH4|||
||APORT4YCH6||PD14|
||APORT4YCH8||PA0|
||APORT4YCH10||PA2|
||APORT4YCH12||PA4|
||APORT4YCH28|||
||APORT4YCH30|||
|ADC0|APORT1XCH6|BUSAX|PC6|
||APORT1XCH8||PC8|
||APORT1XCH10||PC10|
||APORT1XCH16||PF0|
||APORT1XCH18||PF2|
||APORT1XCH20||PF4|
||APORT1XCH22||PF6|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet 

Pin Definitions 

|**Analog Module**|**Analog Module Channel**|**Shared Bus**|**Pin**|
|---|---|---|---|
|ADC0|APORT1YCH7|BUSAY|PC7|
||APORT1YCH9||PC9|
||APORT1YCH11||PC11|
||APORT1YCH17||PF1|
||APORT1YCH19||PF3|
||APORT1YCH21||PF5|
||APORT1YCH23||PF7|
|ADC0|APORT2XCH7|BUSBX|PC7|
||APORT2XCH9||PC9|
||APORT2XCH11||PC11|
||APORT2XCH17||PF1|
||APORT2XCH19||PF3|
||APORT2XCH21||PF5|
||APORT2XCH23||PF7|
|ADC0|APORT2YCH6|BUSBY|PC6|
||APORT2YCH8||PC8|
||APORT2YCH10||PC10|
||APORT2YCH16||PF0|
||APORT2YCH18||PF2|
||APORT2YCH20||PF4|
||APORT2YCH22||PF6|
|ADC0|APORT3XCH2|BUSCX||
||APORT3XCH4|||
||APORT3XCH6||PD14|
||APORT3XCH8||PA0|
||APORT3XCH10||PA2|
||APORT3XCH12||PA4|
||APORT3XCH28|||
||APORT3XCH30|||



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet 

Pin Definitions 

|**Analog Module**|**Analog Module Channel**|**Shared Bus**|**Pin**|
|---|---|---|---|
|ADC0|APORT3YCH3|BUSCY||
||APORT3YCH5||PD13|
||APORT3YCH7||PD15|
||APORT3YCH9||PA1|
||APORT3YCH11||PA3|
||APORT3YCH13||PA5|
||APORT3YCH27||PB11|
||APORT3YCH29||PB13|
||APORT3YCH31|||
|ADC0|APORT4XCH3|BUSDX||
||APORT4XCH5||PD13|
||APORT4XCH7||PD15|
||APORT4XCH9||PA1|
||APORT4XCH11||PA3|
||APORT4XCH13||PA5|
||APORT4XCH27||PB11|
||APORT4XCH29||PB13|
||APORT4XCH31|||
|ADC0|APORT4YCH2|BUSDY||
||APORT4YCH4|||
||APORT4YCH6||PD14|
||APORT4YCH8||PA0|
||APORT4YCH10||PA2|
||APORT4YCH12||PA4|
||APORT4YCH28|||
||APORT4YCH30|||
|IDAC0|APORT1XCH2|BUSCX||
||APORT1XCH4|||
||APORT1XCH6||PD14|
||APORT1XCH8||PA0|
||APORT1XCH10||PA2|
||APORT1XCH12||PA4|
||APORT1XCH28|||
||APORT1XCH30|||



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Pin Definitions 

|**Analog Module**|**Analog Module Channel**|**Shared Bus**|**Pin**|
|---|---|---|---|
|IDAC0|APORT1YCH3|BUSCY||
||APORT1YCH5||PD13|
||APORT1YCH7||PD15|
||APORT1YCH9||PA1|
||APORT1YCH11||PA3|
||APORT1YCH13||PA5|
||APORT1YCH27||PB11|
||APORT1YCH29||PB13|
||APORT1YCH31|||



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Package Specifications 

## **8.  Package Specifications** 

## **8.1  BGM121/BGM123 Package Dimensions** 

**Figure 8.1.  BGM121/BGM123 Package Dimensions** 

|**Dimension**|**MIN**|**NOM**|**MAX**|
|---|---|---|---|
|A|1.20|1.30|1.40|
|A1|0.26|0.30|0.34|
|A2|0.95|1.00|1.05|
|b|0.15|0.25|0.35|
|D|6.50 BSC|||
|D2|2.925 BSC|||
|D3|4.80 BSC|||
|D4|0.625 BSC|||
|D5|0.75 BSC|||
|e|0.40 BSC|||



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet 

Package Specifications 

|**Dimension**|**MIN**|**NOM**|**MAX**|
|---|---|---|---|
|E|6.50 BSC|||
|E2|1.00 BSC|||
|E3|4.80 BSC|||
|E4|3.20 BSC|||
|E5|0.95 BSC|||
|L|0.30|0.40|0.50|
|L1|0.15|0.20|0.25|
|L2|0.675|0.725|0.775|
|L3|0.50|0.60|0.70|
|eD1|2.00 BSC|||
|eD2|1.00 BSC|||
|eD3|2.40 BSC|||
|eD4|1.525 BSC|||
|eE1|0.80 BSC|||
|eE2|2.025 BSC|||
|eE3|1.00 BSC|||
|eE4|0.85 BSC|||
|aaa|0.10|||
|bbb|0.10|||
|ccc|0.10|||
|ddd|0.10|||
|eee|0.10|||
|**Note:**<br>1. All dimensions shown are in millimeters (mm) unless otherwise noted.<br>2. Dimensioning and Tolerancing per ANSI Y14.5M-1994.<br>3. This drawing conforms to the JEDEC Solid State Outline MO-220.<br>4. Recommended card reflow profile is per the JEDEC/IPC J-STD-020 specification for Small Body Components.<br>5. Hatching lines means package shielding area. 6. Solid pattern (3.1x3.1mm) shows non-shielding area including its side walls. For<br>side wall, borderline between shielding area and not-shielding area could not be defined clearly like top side.||||



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Package Specifications 

## **8.2   BGM121/BGM123 Package Marking** 

The figure below shows the package markings printed on the module. 

## **Figure 8.2.  BGM121/BGM123 Package Marking** 

**Table 8.1.  Explanations** 

|**Marking**|**Explanation**|
|---|---|
|X|Module variant<br>• 1 = BGM121, +8dBm TX<br>• 3 = BGM123, +2dBm TX|
|Y|Antenna variant<br>• A = Internal antenna<br>• 3 = RF pin|
|YY|Last 2 digits of manufacturing year<br>• Example: 17 = 2017|
|WW|Work week (01-53)|
|R|Product Revision or FW Revision|
|M|Contract Manufacturer Site assigned by Silicon Labs|
|TT|Unique Batch ID assigned by CM (2 characters A-Z)|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Package Specifications 

## **8.3   BGM121/BGM123 Recommended PCB Land Pattern** 

## **MODULE FOOTPRINT** 

|**Symbol**|**NOM (mm)**|
|---|---|
|b|0.20 BSC|
|D1|5.80 BSC|
|D2|5.150 BSC|
|D3|3.575 BSC|
|D4|0.90 BSC|
|e|0.400 BSC|
|E1|5.800 BSC|
|E2|4.800 BSC|
|E3|5.150 BSC|
|E4|2.925 BSC|
|E5|1.975 BSC|
|L|0.50 BSC|
|L3|0.60 BSC|
|eD1|1.40 BSC|
|eD2|1.00 BSC|
|eD3|0.90 BSC|
|eE1|0.90 BSC|
|eE2|1.90 BSC|
|eE3|2.00 BSC|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Package Specifications 

|**Symbol**|**NOM (mm)**|
|---|---|
|**Note:**<br>1. All feature sizes shown are at Maximum Material Condition (MMC) and a card fabrication tolerance of 0.05mm is assumed.<br>2. Dimensioning and Tolerancing is per the ANSI Y14.5M-1994 specification.<br>3. This Land Pattern Design is based on the IPC-7351 guidelines.<br>**Note**: Soldering process specific adjustments may need to be made to the PCB land pattern.||



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Package Specifications 

## **ANTENNA LAYOUT RECOMMENDATION** 

This section describes the recommended PCB land pattern for the BGM121/BGM123 with X-Y cordinates of pads and the antenna copper clearance area. The X-Y cordinates of pads relative to the origo are shown in the table. The origo is the center point of pin no 53. It is very important to align the antenna area relative to the module pads precisely. This recommendation is only valid for parts with builtin antenna. 

**Figure 8.4.  BGM121/BGM123 Recommended Land Pattern** 

**Note** : The provided stencil information is a recommendation and soldering process specific adjustments may need to be made. 

|**Pad No.**|**Pad coordinates**<br>**(X,Y)**|**Pad size (mm)**|**Solder mask opening**<br>**size (mm)**|**Stencil aperture size (mm)**|
|---|---|---|---|---|
|53|(0,0)|0.6 x 0.6|0.73 x 0.73|0.48 x 0.48|
|51|(1.75, -3.75)||||
|52|(3.75,-3.75)||||
|54|(0,-1.0)||||
|56|(2.925,0)||||



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Package Specifications 

|**Pad No.**|**Pad coordinates**<br>**(X,Y)**|**Pad size (mm)**|**Solder mask opening**<br>**size (mm)**|**Stencil aperture size (mm)**|
|---|---|---|---|---|
|1|(-0.15,-1.95)|0.20 x 0.50|0.33 x 0.63|0.20 x 0.45|
|9|(-0.15,-5.15)||||
|10|(0.35,-5.65)||||
|22|(5.15,-5.65)||||
|23|(5.65,-5.15)||||
|35|(5.65,-0.35)||||
|36|(5.15,0.15)||||
|41|(3.675,-0.75)||||
|50|(0.75,-2.075)||||



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Tape and Reel Specifications 

## **9.  Tape and Reel Specifications** 

## **9.1  Tape and Reel Packaging** 

This section contains information regarding the tape and reel packaging for the BGM121/BGM123 Blue Gecko Module. 

## **9.2  Reel and Tape Specifications** 

- Reel material: Polystyrene (PS) 

- Reel diameter: 13 inches (330 mm) 

- Number of modules per reel: 1000 pcs 

- Disk deformation, folding whitening and mold imperfections: Not allowed 

- Disk set: consists of two 13 inch (330 mm) rotary round disks and one central axis (100 mm) 

- Antistatic treatment: Required 

- Surface resistivity: 10[4] - 10[9] Ω/sq. 

**Figure 9.1.  Reel Dimensions - Side View** 

|**Symbol**|**Dimensions [mm]**|
|---|---|
|W0|32.5 ± 0.3|
|W1|37.1 ± 1.0|



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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Tape and Reel Specifications 

**Figure 9.2.  Cover tape information** 

|**Symbol**|**Dimensions [mm]**|
|---|---|
|Thickness (T)|0.061|
|Width (W)|25.5 + 0.2|



**Figure 9.3.  Tape information** 

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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Tape and Reel Specifications 

## **9.3  Orientation and Tape Feed** 

The user direction of feed, start and end of tape on reel and orientation of the Modules on the tape are shown in the figures below. 

**Figure 9.4.  Module Orientation and Feed Direction** 

## **9.4  Tape and Reel Box Dimensions** 

**Figure 9.5.  Tape and Reel Box Dimensions** 

|**Symbol**|**Dimensions [mm]**|
|---|---|
|W2|368|
|W3|338|
|W4|72|



## **9.5  Moisture Sensitivity Level** 

Reels are delivered in packing which conforms to MSL3 (Moisture Sensitivity Level 3) requirements. 

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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Soldering Recommendations 

## **10.  Soldering Recommendations** 

## **10.1  Soldering Recommendations** 

This section describes the soldering recommendations regarding BGM121/BGM123 Module. 

BGM121/BGM123 is compatible with industrial standard reflow profile for Pb-free solders. The reflow profile used is dependent on the thermal mass of the entire populated PCB, heat transfer efficiency of the oven, and particular type of solder paste used. 

- Refer to technical documentations of particular solder paste for profile configurations. 

- Avoid usining more than two reflow cycles. 

- A no-clean, type-3 solder paste is recommended. 

- A stainless steel, laser-cut and electro-polished stencil with trapezoidal walls should be used to assure good solder paste release. 

- Recommended stencil thickness is 0.100mm (4 mils). 

- Refer to the recommended PCB land pattern for an example stencil aperture size 

- For further recommendation, please refer to the JEDEC/IPC J-STD-020, IPC-SM-782 and IPC 7351 guidelines. 

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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Certifications 

## **11.  Certifications** 

## **11.1  Bluetooth** 

The BGM121/BGM123 Bluetooth Declarion ID is: D033250. 

## **11.2  CE** 

The BGM121/BGM123 module is in conformity with the essential requirements and other relevant requirements of the Radio Equipment Directive (RED) (2014/53/EU). 

Please note that every application using the BGM121/BGM123 will need to perform the radio EMC tests on the end product according to EN 301 489-17. 

The conduced test results can be inherited from the modules test report to the test report of the end product using BGM121/BGM123. EN 300 328 radiated spurious emission test must be repeated with the end product assembly. 

Test documentation and software for the EN 300 328 radiated spurious emissions testing can be requested from the Silicon Labs support. 

A formal DoC is available via www.silabs.com 

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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Certifications 

## **11.3  FCC** 

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 

- This device may not cause harmful interference, and 

- This device must accept any interference received, including interference that may cause undesirable operation. 

Any changes or modifications not expressly approved by Silicon Labs could void the user’s authority to operate the equipment. 

## **FCC RF Radiation Exposure Statement:** 

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. End users must follow the specific operating instructions for satisfying RF exposure compliance. This transmitter meets both portable and mobile limits as demonstrated in the RF Exposure Analysis and SAR test report. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter except in accordance with FCC multi-transmitter product procedures. 

## **OEM Responsibilities to comply with FCC Regulations:** 

The transmitter module must not be co-located or operating in conjunction with any other antenna or transmitter except in accordance with FCC multi-transmitter product procedures. 

Each new host will require reassessment of radiated spurious emissions and a permissive change to the certification. 

For BGM121N the minimum separation distance to human body is 6 mm. If the separation distance from the antenna to human body is 6 mm or more, SAR testing is not needed. In case the separation distance to human body is less than 6 mm, then OEM integrator is responsible to test the SAR with the end product assembly. 

OEM integrator is responsible for testing their end-product for any additional compliance requirements required with this module installed (for example, digital device emissions, PC peripheral requirements, etc.). 

## **Important Note:** 

In the event that this condition cannot be met (for certain configurations or co-location with another transmitter), then the FCC authorization is no longer considered valid and the FCC ID cannot be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization. 

## **End Product Labeling** 

The BGM121/BGM123 Bluetooth module is labeled with its own FCC ID. If the FCC ID is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. In that case, the final end product must be labeled in a visible area with the following: 

"Contains Transmitter Module FCC ID: QOQBGM12LMA" 

## Or 

## "Contains FCC ID: QOQBGM12LMA" 

The OEM integrator must not provide information to the end user regarding how to install or remove this RF module or change RF related parameters in the user manual of the end product. 

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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Certifications 

## **11.4  ISED Canada** 

## **ISED Canada (English)** 

This radio transmitter has been approved by Industry Canada to operate with its embedded antenna. Other antenna types are strictly prohibited for use with this device. This device complies with Industry Canada’s license-exempt RSS standards. Operation is subject to the following two conditions: 

1. This device may not cause interference; and 

2. This device must accept any interference, including interference that may cause undesired operation of the device. 

**RF Exposure Statement** 

Exception from routine SAR evaluation limits are given in RSS-102 Issue5. BGM121N meets the given requirements when the minimum separation distance to human body is less than equal to 15 mm. RF exposure or SAR evaluation is not required when the separation distance is 15 mm or more. 

BGM121A and BGM123A modules has been tested for worst case RF exposure. As demonstrated in the SAR test report, BGM121A and BGM123A can be mounted in touch with human body without further SAR evaluation. 

If the separation distance of BGM121N or BGM123N is less than 15 mm the OEM integrator is responsible for evaluating the SAR. 

## **OEM Responsibilities to comply with IC Regulations** 

The transmitter module must not be co-located or operating in conjunction with any other antenna or transmitter. 

Radiated emission must be tested with each new host product and ISEDC must be notified with a Class 4 Permissive Change. 

OEM integrator is responsible for testing their end-product for any additional compliance requirements required with this module installed (for example, digital device emissions, PC peripheral requirements, etc.). 

## **Important note** 

In the event that these conditions cannot be met (for certain configurations or co-location with another transmitter), then the IC authorization is no longer considered valid and the IC ID cannot be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate IC authorization. **End Product Labeling** 

The BGM121/BGM123 module is not labeled with IC ID because of its small physical size. The final end product must be labeled in a visible area with the following: 

## “ **Contains Transmitter Module IC: 5123A-BGM12LMA** ” 

or 

## “ **Contains IC: 5123A-BGM12LMA”** 

The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF module or change RF related parameters in the user manual of the end product. 

## **ISED Canada (Français)** 

Cet émetteur radio (IC : 5123A-BGM12LMA) a reçu l'approbation d'Industrie Canada pour une exploitation avec l'antenne puce incorporée. Il est strictement interdit d'utiliser d'autres types d'antenne avec cet appareil. 

Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes: 

1. L’appareil ne doit pas produire de brouillage; et 

2. L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible de provoquer un fonctionnement non désiré de l’appareil. 

## **Déclaration relative à l'exposition aux radiofréquences (RF)** 

Les limites applicables à l’exemption de l’évaluation courante du DAS sont énoncées dans le CNR 102, 5e édition. Le module Bluetooth BGM121/BGM123 répond aux exigences données quand la distance de séparation minimum par rapport au corps humain est de 15 mm. L'évaluation de l'exposition aux RF ou du DAS n'est pas requise quand la distance de séparation est de 15 mm ou plus. Si la distance de séparation est inférieure à 15 mm, il incombe à l'intégrateur FEO d'évaluer le DAS. 

## **Responsabilités du FEO ayant trait à la conformité avec les règlements IC** 

Le Module Bluetooth BGM121/BGM123 a été certifié pour une intégration dans des produits uniquement par les intégrateurs FEO dans les conditions suivantes: 

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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Certifications 

- La ou les antennes doivent être installées de telle façon qu'une distance de séparation minimum de 15 mm soit maintenue entre le radiateur (antenne) et toute personne à tout moment. 

- Le module émetteur ne doit pas être installé au même endroit ou fonctionner conjointement avec toute autre antenne ou émetteur. 

Dès lors que les deux conditions ci-dessus sont respectées, aucun test supplémentaire de l’émetteur n’est obligatoire. Cependant, il incombe toujours à l'intégrateur FEO de tester la conformité de son produit final vis-à-vis de toute exigence supplémentaire requise avec ce module installé (par exemple, émissions de dispositifs numériques, exigences relatives aux matériels périphériques PC, etc). 

**Note:** S'il s'avère que ces conditions ne peuvent être respectées (pour certaines configurations ou la colocation avec un autre émetteur), alors l'autorisation IC n'est plus considérée comme valide et l'identifiant IC ne peut plus être employé sur le produit final. Dans ces circonstances, l'intégrateur FEO aura la responsabilité de réévaluer le produit final (y compris l'émetteur) et d'obtenir une autorisation IC distincte. 

## **Étiquetage du produit final** 

L'étiquette du Module BGM121/BGM123 porte son propre identifiant IC. Si l'identifiant IC n'est pas visible quand le module est installé à l'intérieur d'un autre appareil, alors l'extérieur de l'appareil dans lequel le module est installé doit aussi porter une étiquette faisant référence au module qu'il contient. Dans ce cas, une étiquette comportant les informations suivantes doit être apposée sur une partie visible du produit final. 

## **"Contient le module émetteur IC: 5123A-BGM12LMA"** 

ou 

## **"Contient IC : 5123A-BGM12LMA"** 

L'intégrateur FEO doit être conscient de ne pas fournir d'informations à l'utilisateur final permettant d'installer ou de retirer ce module RF ou de changer les paramètres liés aux RF dans le mode d'emploi du produit final. 

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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Certifications 

## **11.5  Japan** 

The BGM121/BGM123 is certified in Japan with certification number 209-J00226. 

## **Important** 

The module does is not labeled with Japan certification mark and ID because of the small physical size. Manufacturer who integrates a radio module in their host equipment must place the certification mark and certification number on the outside of the host equipment. 

The certification mark and certification number must be placed close to the text in the Japanese language which is provided below. 

## **Translation:** 

“This equipment contains specified radio equipment that has been certified to the Technical Regulation Conformity Certification under the Radio Law.” 

## **11.6  Approved Antenna Types** 

BGM121N and BGM123N modules are approved with a standard 2.14 dBi dipole antenna. Any antenna of the same type, similar inband out of band characteristics and with the same or less gain can be used without reassessment. In case using antenna of a different type and/or higher gain reassessments and notification to the particular certification authority is required. 

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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Revision History 

## **12.  Revision History** 

## **12.1  Revision 1.3** 

- Package dimensions diagram updated 

- p and L dimensions adjusted in the PCB land pattern dimensions 

- Maximum TX power for BGM123 is amended to +2 dBm, was +3 dBm in earlier data sheet revisions 

- Maximum TX power for BGM121 is +8 dBm as in earlier data sheet versions 

- Table 4.7 Current consumption in transmit mode: +3 dBm output power changed to +2 dBm 

## **12.2  Revision 1.2** 

- Alternate functionality overview table - the following pins missing were added into table: 

   - Certifications listed on front page 

   - Bluetooth 4.2 compliant changed to Bluetooth 4.2 low energy compliant on front page 

   - + symbol added to top row Typ value in table 4.11 

   - Typical schematics section updated 

   - PCB Layout recommendations sectionupdated 

   - Package Specifications section revised 

   - ISEDC changed to ISED Canada 

## **12.3  Revision 1.1** 

- Alternate functionality overview table - the following pins missing were added into table: 

   - PA2 / PA3 / PA4 / PA5 

   - PC6 / PC7 / PC8 / PC9 

   - PF4 / PF5 / PF6 / PF7 

- Alternate functionality overview table - LEU0_TX row added. 

- Alternate functionality overview table - layout within cells in the table modified. 

- Feature list updated 

## **12.4  Revision 1.0** 

- Chapter 4.1.8.1 RF Transmitter General Characteristics for the 2.4 GHz Band updated 

- ISEDC description added in French 

- BGM121/BGM123 Module Dimensions and Footprint chapter removed 

## **12.5  Revision 0.85** 

- Package marking updated 

## **12.6  Revision 0.84** 

- Package marking updated 

## **12.7  Revision 0.83** 

- Minor updates 

## **12.8  Revision 0.82** 

- Updated electrical characteristics 

- Updated package dimensions 

- Updated footprint 

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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Revision History 

## **12.9  Revision 0.81** 

- Layout guidelines updated 

- Reference schematics added 

- Tape and Reel specifications added 

## **12.10  Revision 0.80** 

- Soldering recommendatoions added 

- EM4 shutoff maximum current updated 

- Radion patterns added 

- Package marking added 

## **12.11  Revision 0.79** 

- Electrical characterisitics updated 

## **12.12  Revision 0.78** 

- Name of datasheet changed from "BGM12 Datasheet" to "BGM121/BGM123 Datasheet" 

- Port D9 / Pin 7 marked as "Reserved". 

- Number of GPIO pins reduced from 32 to 29. 

- Number of pins connected to Analog Port reduced from 32 to 29. 

- Ordering info for full production part numbers included. 

## **12.13  Revision 0.77** 

- Power, Ground, Debug, Host UART, SPI, I2C Connections figure updated. 

## **12.14  Revision 0.76** 

- GPIO pin data updated 

- Module pinout corrected (V_1V8 and V_BATT exchanged) 

- PB14 and PB15 marked DNC (Do Not Connect) 

## **12.15  Revision 0.75** 

- OPN table updated 

- Max TX power updated 

## **12.16  Revision 0.74** 

- Land pattern added 

## **12.17  Revision 0.73** 

- Updated pin definitions 

- Updated pinout 

## **12.18  Revision 0.72** 

- Updated pin definitions 

- Updated package specifications 

- Added SPI reference schematic 

- Updated layout guidelines 

## **12.19  Revision 0.71** 

- Updated electrical characteristics 

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BGM121/BGM123 Blue Gecko _Bluetooth_[®] SiP Module Data Sheet Revision History 

## **12.20  Revision 0.70** 

- Initial draft 

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## **Disclaimer** 

Silicon Labs intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers using or intending to use the Silicon Labs products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific device, and "Typical" parameters provided can and do vary in different applications. Application examples described herein are for illustrative purposes only. Silicon Labs reserves the right to make changes without further notice and limitation to product information, specifications, and descriptions herein, and does not give warranties as to the accuracy or completeness of the included information. Silicon Labs shall have no liability for the consequences of use of the information supplied herein. This document does not imply or express copyright licenses granted hereunder to design or fabricate any integrated circuits. The products are not designed or authorized to be used within any Life Support System without the specific written consent of Silicon Labs. A "Life Support System" is any product or system intended to support or sustain life and/or health, which, if it fails, can be reasonably expected to result in significant personal injury or death. Silicon Labs products are not designed or authorized for military applications. Silicon Labs products shall under no circumstances be used in weapons of mass destruction including (but not limited to) nuclear, biological or chemical weapons, or missiles capable of delivering such weapons. 

## **Trademark Information** 

Silicon Laboratories Inc.® , Silicon Laboratories®, Silicon Labs®, SiLabs® and the Silicon Labs logo®, Bluegiga®, Bluegiga Logo®, Clockbuilder®, CMEMS®, DSPLL®, EFM®, EFM32®, EFR, Ember®, Energy Micro, Energy Micro logo and combinations thereof, "the world’s most energy friendly microcontrollers", Ember®, EZLink®, EZRadio®, EZRadioPRO®, Gecko®, ISOmodem®, Micrium, Precision32®, ProSLIC®, Simplicity Studio®, SiPHY®, Telegesis, the Telegesis Logo®, USBXpress®, Zentri and others are trademarks or registered trademarks of Silicon Labs. ARM, CORTEX, Cortex-M3 and THUMB are trademarks or registered trademarks of ARM Holdings. Keil is a registered trademark of ARM Limited. All other products or brand names mentioned herein are trademarks of their respective holders. 

**Silicon Laboratories Inc. 400 West Cesar Chavez Austin, TX 78701 USA** 

**http://www.silabs.com**
Updated at April 28, 2026
Silicon Labs is a recognized industry leader in secure, intelligent wireless technology and precision timing solutions. Renowned for driving innovation in the Internet of Things (IoT) and industrial automation, the company develops electronic components that deliver the performance, energy savings, and design simplicity required to build a seamlessly connected world. Our extensive portfolio of Silicon Labs components prominently features their robust wireless connectivity and timing products. This includes a comprehensive selection of Bluetooth modules and adaptors engineered for reliable, low-power communication in smart devices. Complementing these wireless offerings is a broad array of precision timing devices, particularly standard and advanced MEMS oscillators, which are critical for ensuring exact synchronization and stable frequency control in demanding circuit designs. To support a wider spectrum of networking and communication requirements, the lineup also encompasses versatile WLAN modules and USB adaptors. Additionally, engineers will find highly integrated sub-2.4GHz ISM band RF transceivers, available as both standalone integrated circuits and complete RF modules, providing exceptional range and signal resilience for complex wireless deployments.
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