DMC-50149NYU-LY-B

(AB)

No.98-0118

OPTREX CORPORATION

Page 9/16

OPTREX

4.I/O Terminal

4.1.Pin Assignment

CN1

No.

Symbol

Level

Function

1

－

Power Supply (0V)

2

－

Power Supply for Logic

3

－

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

VLED

－

Power Supply for LED

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

VCC

VEE

VSS

VEE (-Voltage)

VCC (+Voltage)

VR=10～20KΩ

VSS (0V)

VR