AND491GST-LED

## **AND491GST 2 lines x 16 Characters Intelligent Character Display** 

The AND491GST devices are compact, LCD modules that have an on-board LCD controller and driver circuit. These devices can display 160 characters (numerals, letters, symbols and Kana letters), as well as eight custom characters. 

## **Features** 

**• RoHS Compliant Absolute Maximum Ratings** 

- AND491GST: Super Twist Technologyt 

|**Item**<br>~~Ee~~|**Item**<br>~~Ee~~|**Item**<br>~~Ee~~|**Symbol**<br>~~Ee~~|**Symbol**<br>~~Ee~~|**Rating**<br>~~Ee~~|**Rating**<br>~~Ee~~|**Rating**<br>~~Ee~~|**Rating**<br>~~Ee~~|**Rating**<br>~~Ee~~|**Unit**<br>~~Ee~~|**Unit**<br>~~Ee~~|
|---|---|---|---|---|---|---|---|---|---|---|---|
|Supply Voltage<br>~~Ee~~|||V<br>DD<br>~~Ee~~||7.0<br>~~Ee~~|||||V<br>~~Ee~~||
|Input Voltage<br>~~Ee~~|||V<br>IN<br>~~Ee~~||0<br>≤<br>V<br>IN<br>≤<br>V<br>DD<br>~~Ee~~|||||V<br>~~Ee~~||
|Operating Temperature<br>~~Ee~~|||T<br>op<br>~~Ee~~||0 to +50<br>~~Ee~~|||||°C<br>~~Ee~~||
|Storage Temperature<br>~~Ee~~|||T<br>stg<br>~~Ee~~||–20 to +60<br>~~Ee~~|||||˚C<br>~~Ee~~||
|**Electrical Characteristics (TA = 25°C)**<br>~~Ee~~||||||||||||
|**Item**<br>~~re~~|||**Symbol**<br>~~re~~|**Min.**<br>~~re~~|||**Typ.**<br>~~re~~||**Max.**<br>~~re~~||**Unit**<br>~~re~~|
|LCD Operating Voltage<br>(T= 0 ºC)<br>~~re~~|||V<br>DD<br>-V<br>O<br>~~re~~<br>|<br>e**e**<br>e|–<br>~~re~~|||4.8<br>~~re~~||–<br>~~re~~||V<br>~~re~~<br>**e**<br>ee|
|LCD Operating Voltage<br>(T= 25 ºC)||||–|||4.5||–|||
|LCD Operating Voltage<br>(T= 50 ºC)<br>|<br>e||||–<br>**e**<br>ee|||4.2<br>**e**||–<br>**e**<br>ee|||
|Supply Voltage<br>e|||V<br>DD<br>- V<br>SS<br>e**e**<br>e<br>ee|4.7<br>**e**<br>ee<br>ee|||5<br>**e**<br>ee||5.3<br>**e**<br>ee<br>ee||V<br>**e**<br>ee<br>ee|
|Supply Current<br>e<br>es|||I<br>DD<br>e**e**<br>e<br>es<br>ee|–<br>**e**<br>ee<br>es<br>ee|||2<br>**e**<br>es<br>ee||4<br>**e**<br>ee<br>es<br>ee||mA<br>**e**<br>ee<br>es<br>ee|
|Input Voltage High Level<br>es<br>**e**|||V<br>IH<br>es<br>ee <br>**e**e<br>ee|2.2<br>es<br> ee <br>e<br>ee|||–<br>es<br> ee<br>e<br>ee||V<br>DD<br>es<br>ee<br>e<br>ee||V<br>es<br>ee<br>e<br>eee|
|Input Voltage Low Level<br>**e**<br>ee|||V<br>IL<br>**e**e<br>e<br>ee<br>ee|0<br>e<br>e<br>ee<br>eee|||–<br>e<br>e<br>ee<br>eee||0.6<br>e<br>e<br>ee<br>eee|||
|Output Voltage High Level<br>ee|||V<br>OH<br>ee <br>ee|2.4<br> ee<br>eee|||–<br>ee<br>eee||–<br>ee<br>eee||V<br>eee|
|Output Voltage Low Level<br>ee<br>po|||V<br>OL<br>ee<br>po|–<br>eee<br>po|||–<br>eee<br>po||0.4<br>eee<br>po|||
|**Optical Characteristics (TA 5 = 25˚C,**<br>φ<br>**= 0°,**<br>θ<br>**= 0°)**<br>ee eee<br>po||||||||||||
|**Item**|**Symbol**|**Min.**||||**Typ.**||**Max.**||**Unit**||
|Viewing Angle|φ|–||||50||–||degree||
|Contrast|K|–||||6.0||–||–||
|Turn On|T<br>on|–||||200||400||ms||
|Turn Off|T<br>off|–||||250||400||ms||



- 5 x 7 Dots with cursor 

- Built-in controller (KS0066 or equivalent) 

- 5 V Power supply 

- RoHS compliant 

- 4.2V LED Forward voltage 

## **Dot Matrix Dimensions** 

## **Mechanical Characteristics** 

|**Item**|**Specification**|**Unit**|
|---|---|---|
|Outline<br>Dimensions|80 (W) x 36 (H) x 8.8(D)  (12.7 LED)|mm|
|Character size|2.96 (W) x 5.56 (H)|mm|
|Viewing Area|65 (W) x 16(H)|mm|
|Character Pitch|3.55 (W) x 5.94(H)|mm|
|Dot Size|0.55 (W) x 0.66 (H)|mm|
|Dot Pitch|0.60 (W) x 0.70 (H)|mm|



Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085 Tel: 408.523.8200 • Fax: 408.733.1287 • email@purdyelectronics.com • www.purdyelectronics.com 

7/20/07 

1 

**AND491GST Intelligent Character Display** 

## **Connector Pin Assignment** 

|**Pin No.**|**Signal**|**Function**|
|---|---|---|
|1|V<br>SS|0V|
|2|V<br>DD|5V|
|3|V<br>O|Contrast Adj.|
|4|RS|Register Select|
|5|R/W|Read/Write|
|6|E|Enable|
|7|DBO|Data Bit 0|
|8|DB1|Data Bit 1<br>Data Bit 2|
|9|DB2||
|10|DB3|Data Bit 3|
|11|DB4|Data Bit 4|
|12|DB5|Data Bit 5|
|13|DB6|Data Bit 6|
|14|DB7|Data Bit 7|
|15|A|LED Power|
|16|K|Led  Power|



## **Power Supply** 

The LCD panel is driven by the voltage VDD–VO, so you need an adjustable VO for contrast control and temperature compensation. 

## **Temperature Variations** 

|**Temperature**|**Temperature**|||**V**|**DD**|**–V**<br>**O**|**–V**<br>**O**|**–V**<br>**O**|
|---|---|---|---|---|---|---|---|---|
|0°C|||||4.80||||
|+25°C|||||4.50||||
|+50°C|||||4.20||||
|**Power Supply Block Diagram**|||||||||
||||||||||
|VDD||||(+5V)|||||
|||VDD– VO|||||||
|VO||||VR||||VDD|
|GND|||||||||
||||VDD– VO= LCD Drive Voltage|||||= LCD Drive Voltage|
||||VR10 to 20 kΩ||||||



## **Power Supply Block Diagram** 

## **Block Diagram** 

## **Dimensional Outline** 

Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085 Tel: 408.523.8200 • Fax: 408.733.1287 • email@purdyelectronics.com • www.purdyelectronics.com 

7/20/07 

2