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Bolymin, Inc.
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7. Interface Pin Function
Pin No.
Symbol
Level
Description
1
Vss
0V
Ground
2
Vdd
5.0V
Supply Voltage for logic (option +3V)
3
Vo
(Variable) Operating voltage for LCD
4
RS
H/L
H:DATA, L:Instruction code
5
R/W
H/L
H:Read(MPU→Module)L:Write(MPU→Module)
6
E
H,H→L Chip enable signal
7
DB0
H/L
Data bit 0
8
DB1
H/L
Data bit 1
9
DB2
H/L
Data bit 2
10
DB3
H/L
Data bit 3
11
DB4
H/L
Data bit 4
12
DB5
H/L
Data bit 5
13
DB6
H/L
Data bit 6
14
DB7
H/L
Data bit 7
15
A / Vee
-
Power supply for LED backlight ( + ) /
Negative voltage output
16
K
-
Power supply for LED backlight ( - )