Displays

Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085

Tel: 408-523-8200 • Fax: 408-733-1287 • sales@purdyelectronics.com •

www.purdyelectronics.com

6/20/11

3

Interface Pin Assignment

Pin No. Pin Out

Level

Function Description

Pin No Pin Out Level

Function Description

1

VSS

0V

Power Supply Ground

9

DB2

H/L

Data Bit 2

2

VDD

3.3V

Power Supply Voltage

10

DB3

H/L

Data Bit 3

3

V0

—

Contrast Adjustment

11

DB4

H/L

Data Bit 4

4

RS

H/L

Register Select

12

DB5

H/L

Data Bit 5

5

R/W

H/L

Read/ Write

13

DB6

H/L

Data Bit 6

6

E

H, H —>L Enable Signal

14

DB7

H/L

Data Bit 7

7

DB0

H/L

Data Bit 0

15

A

3.5V

LED Power Supply (+)

8

DB1

H/L

Data Bit 1

16

K

0V

LED Power Supply (-)

Block Diagram

AND671WGST-LED

Intelligent Character Display

Power Supply