128x32 單色繪圖型顯示模組, 128*32 繪圖LCD模組, 單色顯示器, ST7920

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

RS

H/L

Data Type Select Signal

5

R/W

H

Read/Write

6

E

H

Enable Signal

7

DB0

H/L

Data Bus Line

8

DB1

H/L

Data Bus Line

9

DB2

H/L

Data Bus Line

10

DB3

H/L

Data Bus Line

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

A

4.2V

LED Power(+)

16

K

0V

LED Power(-)