DMC20261NYJ-LY-BCE (CD) No.99-0207 OPTREX CORPORATION Page 8/16
OPTREX
4.I/O Terminal
4.1.Pin Assignment
No. Symbol Level Function
1
V
SS
－
Power Supply (0V, GND)
2
V
DD
－
Power Supply for Logic
3
V
EE
－
Power Supply for LCD Drive
4
RS H / L Register Select Signal
5
R/W H / L Read/Write Select Signal H : Read L : Write
6
E H / L Enable Signal (No pull-up Resister)
7
DB0 H / L Data Bus Line / Non-connection at 4-bit operation
8
DB1 H / L Data Bus Line / Non-connection at 4-bit operation
9
DB2 H / L Data Bus Line / Non-connection at 4-bit operation
10
DB3 H / L Data Bus Line / Non-connection at 4-bit operation
11
DB4 H / L Data Bus Line
12
DB5 H / L Data Bus Line
13
DB6 H / L Data Bus Line
14
DB7 H / L Data Bus Line
15
ANODE
－
LED Anode Terminal
16
CATHODE
－
LED Cathode 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.
MODULE
VDD
VEE
VSS
VEE (-Voltage)
VDD (+Voltage)
VR=10～20KΩ
VSS (0V)
VR
