
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
4
7/20/07
www.purdyelectronics.com
Displays
Connector Pin Assignment for Interface
Power Supply
Interface Pin Assignment
Terminal
No.
Symbol Level Function
1
V
SS
0V Power Supply Ground
2
V
DD
5V Logic Supply Voltage
3
V
O
– Contrast Adjustment Voltage
4 /RD L Read Signal
5 /WR L Write Signal
6 Ao H/L Data Type Select
7 DB0 H/L
Data Bus Line
8 DB1 H/L
9 DB2 H/L
10 DB3 H/L
11 DB4 H/L
12 DB5 H/L
13 DB6 H/L
14 DB7 H/L
15 /CS L Chip Signal
16 /RST L Reset Signal
17
V
LCD
– Power Supply for LCD
18
FG
– For GND
19
NC
– No Connection
20
NC
No Connection
Block Diagram
AND3222MST2
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