4.I/O Terminal
4.1.Pin Assignment
CN1
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Symbol
VSS
VCC
VEE
RS
R/W
E
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
EL
EL
Level
-
-
-
H/L
H/L
H/L
H/L
H/L
H/L
H/L
H/L
H/L
H/L
H/L
-
-
Function
Power Supply (0V, GND)
Power Supply for Logic
Power Supply for LCD Drive
Register Select Signal
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
Data Bus Line
Data Bus Line
Data Bus Line
Power Supply for EL
Power Supply for EL
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
VR
MODULE VEE
VSS
VR=10~20KΩ
VCC (+Voltage)
VEE (-Voltage)
VSS (0V)
DMC20434HE (AG) No.2000-0260
OPTREX CORPORATION
OPTREX
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