[4]
Pin Description and Wiring Diagram
Pin No.
Symbol
External
Connection
Function Description
1
Vss
Power Supply
Ground
2
VDD
Power Supply
Supply voltage for logic (
+3.
3V)
3
V0
Power Supply
Powe
r supply for contrast (approx.
0.1
V)
4
RS
MPU
Register select signal. RS=0: Command, RS=1: Data
5
R/W
MPU
Read/Write
select signal, R/W=1: Read R/W:=0: Write
6
E
MPU
Operation enable signal. Falling edge triggered.
7-10
DB0
-DB3
MPU
Fo
ur low order bi
-directional three
-state data bus lines. These four
are not used during 4-bit operation.
11
-14
DB4
-DB7
MPU
Four high
order bi
-directional three
-state data bus lines.
15
LED+
Power Supply
Power supply for LED Backlight (+
3.3V
)
16
LED
-
Power Supply
Ground for backlight
Recommended LCD connector:
2.54mm pitch pins
Backlight connector:
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Mates with:
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