Pin Description and Wiring Diagram
Pin No. Symbol
1‐4
5‐8
9
10
11
12
13
14
15
16
17
18
DB7‐DB4
DB3‐DB0
E1
R/W
RS
V0
Vss
VDD
E2
NC
LED+
LED‐
External
Connection
MPU
MPU
MPU
MPU
MPU
Power Supply
Power Supply
Power Supply
MPU
‐
Power Supply
Power Supply
Function Description
Four high order bi‐directional three‐state data bus lines.
Four low order bi‐directional three‐state data bus lines. These four
are not used during 4‐bit operation.
Operation enable signal. Falling edge triggered for top 2 lines.
Read/Write select signal, R/W=1: Read R/W:=0: Write
Register select signal. RS=0: Command, RS=1: Data
Power supply for contrast (approx. 0.5V)
Ground
Supply voltage for logic (+5.0V)
Operation enable signal. Falling edge triggered for bottom 2 lines.
No Connect
Power supply for LED backlight (+3.5V)
Ground for backlight
Recommended LCD connector: 2.54mm pitch pins
Backlight connector: ‐‐‐ Mates with: ‐‐‐
[4]
NEWHAVEN [ NEWHAVEN DISPLAY INTERNATIONAL, INC. ]
