Item

Symbol

Min.

Typ.

Max

Unit

Supply Voltage For Logic

VDD-VSS

0

-

7

V

Supply Voltage For LCD Drive

VDD-VO

0

-

12

V

Input Voltage

VI

VSS

-

VDD

mA

Item

Symbol

Condition

Min.

Typ.

Max

Unit

Supply Voltage For Logic

VDD-VSS

T=0℃

4.5

5.0

5.5

V

Supply Voltage For LCD Drive

VDD-VO

VDD=5V, Ta=25℃

4.4

4.8

5.2

V

Supply Current

IDD

VDD=5V

-

2.5

4.5

mA

Input Voltage

“High” Level

VIH

-

2.2

-

VDD

V

“Low” Level

VIL

-

-

-

0.6

V

Output Voltage

“High” Level

VOH

-

2.4

-

-

V

“Low” Level

VOL

-

-

-

0.4

V

Pin No.

Symbol

LEVEL

Function

1

VSS

0V

Power Supply Ground

2

VDD

5V

Power Supply Voltage

3

VO

-

Contrast Adjustment Voltage

4

AO

H/L

Data Type Select Signal

5

CS1

H

Chip Select Signal For IC1

6

CS2

H

Chip Select Signal For IC2

7

CL

H/L

Clock Input (2 KHZ)

8

E

HèL

Enable Signal

9

R/W

H/L

H : Read / L : Write

10

DB0

H/L

Data Bus Line

11

DB1

H/L

Data Bus Line

12

DB2

H/L

Data Bus Line

13

DB3

H/L

Data Bus Line

14

DB4

H/L

Data Bus Line

15

DB5

H/L

Data Bus Line

16

DB6

H/L

Data Bus Line

17

DB7

H/L

Data Bus Line

18

/RES

L

Reset Signal

19

A

4.2V

LED Power (+)

20

K

0V

LED Power (-)