Pin Description and Wiring Diagram
Pin No. Symbol
1
2
3
4
5
6
7‐14
15
16
17
18
19
20
VSS
VDD
V0
D/I
R/W
E
DB0‐DB7
CS1
CS2
/RST
VEE
LED+
LED‐
External
Connection
Power Supply
Power Supply
Adj Power Supply
MPU
MPU
MPU
MPU
MPU
MPU
MPU
Power Supply
Power Supply
Power Supply
Function Description
Ground
Power supply for Logic (+5.0V)
Power Supply for contrast (approx.
‐3.7V)
Register select: 1=Data, 0=Instruction
Read/Write select signal, R/W=1: Read R/W: =0: Write
Operation enable signal. Falling edge triggered.
This is an 8‐bit‐directional data bus
Chip Selection: CS1=H, CS2=L select IC1 (left side)
CS1=L, CS2=H select IC2 (right side)
Active LOW Reset signal
Negative voltage output (‐5.0V)
Power for LED backlight (+5.0V via 51Ω on‐board resistor)
Ground for Backlight
Recommended LCD connector: 2.54mm pitch pins
Backlight connector: on LCD connector
[4]
NEWHAVEN [ NEWHAVEN DISPLAY INTERNATIONAL, INC. ]
