ACM4002 datasheet(2/5 Pages) AZDISPLAYS

2 / 5 page

AZ DISPLAYS, INC.

6/18/97

ACM4002D SERIES LCD MODULE

4.0 ELECTRICAL CHARACTERISTICS (Ta = 25

°C, VDD = 5.0V ± 0.25V)

Item

Symbol

Condition

Min

Typ

Max

Unit

Supply voltage for LCD drive

VDD-VO

Ta = 25

°C, STN

4.8

Supply voltage for LCD drive

VDD-VO

Ta = 25

°C, TN

4.8

Input voltage

4.75

5.0

5.25

Input high voltage

VIH

2.2

VDD

Input low voltage

VIL

0.6

Output high voltage

VOH

IOH=0.2mA

2.4

Output low voltage

VOL

IOL=1.2mA

0.4

Supply current

IDD

VDD=5.0V

3.0

Input leakage current

ILKG

1.0

LED power supply current

ILED

VLED=5V, R=3.6

Ω

220

5.0 INTERFACE PIN CONNECTIONS

Pin No.

Symbol

Level

Pin Description

Function

VSS

Ground

VDD

Supply voltage for logic

+5V

LCD contrast adjust

By user

H/L

H: Data; L: Instruction code

R/W

H/L

Read / write

H: Data read, L: Data write

H, H

→L

Enable

Start signal for data read/write

DB0

H/L

Data bit 0

8-bit interface

DB1

H/L

Data bit 1

8-bit interface

DB2

H/L

Data bit 2

8-bit interface

DB3

H/L

Data bit 3

8-bit interface

DB4

H/L

Data bit 4

4-bit or 8-bit interface

DB5

H/L

Data bit 5

4-bit or 8-bit interface

DB6

H/L

Data bit 6

4-bit or 8-bit interface

DB7

H/L

Data bit 7

4-bit or 8-bit interface

Anode for LED backlight

Power supply for LED backlight

Cathode for LED backlight

Power supply for LED backlight

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