4.I/O Terminal
4.1.Pin Assignment
No.
1
Symbol
VSS
Level
－
Function
Power Supply (0V, GND)
Power Supply for Logic
VCC
VEE
－
2
－
Power Supply for LCD Drive
3
RS
H / L
H / L
H / L
H / L
H / L
H / L
H / L
H / L
H / L
H / L
H / L
Register Select Signal
4
R/W
E
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
5
6
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
7
8
9
10
11
12
13
14
Data Bus Line
Data Bus Line
Data Bus Line
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
VSS
VEE
VCC (+Voltage)
VSS (0V)
VR
MODULE
～
VR=10 20K
Ω
DMC16249UB* (BK) No.98-0151
OPTREX CORPORATION
Page 7/14
OPTREX
OPTREX [ OPTREX CORPORATION ]
