4. I/O Terminal
4.1.Pin Assignment
CN1
No.
Symbol
Level
–
Function
1
2
VSS
Power Supply (0V, GND)
Power Supply for Logic
VCC
–
3
VEE
–
Power Supply for LCD Drive
Register Select Signal
4
RS
R/W
H / L
H / L
H / L
H / L
H / L
H / L
H / L
H / L
H / L
H / L
H / L
–
5
Read/Write Select Signal H : Read L : Write
Enable Signal (No pull-up Resister)
Data Bus Line / Non-connection at 4-bit operation
Data Bus Line / Non-connection at 4-bit operation
Data Bus Line / Non-connection at 4-bit operation
Data Bus Line / Non-connection at 4-bit operation
Data Bus Line
6
E
7
DB0
8
DB1
9
DB2
10
11
12
13
14
15
16
DB3
DB4
DB5
Data Bus Line
DB6
Data Bus Line
DB7
Data Bus Line
LED CATHODE
LED ANODE
LED Cathode Terminal
–
LED Anode Terminal
4.2.Example of Power Supply
It is recommended to apply a potentiometer for the contrast adjust due to the tolerance
of the driving voltage and its temperature dependence.
VCC
VEE
VSS
VCC (+Voltage)
VEE (-Voltage)
VSS (0V)
VR
MODULE
VR=10~20KW
DMC16230NY–LY (AV) No.98-0110
OPTREX
OPTREX CORPORATION
Page 8/15
OPTREX [ OPTREX CORPORATION ]
