AZ DISPLAYS, INC.

2

1/15/02

ACM4004D SERIES LCD MODULE

4.0 ELECTRICAL CHARACTERISTICS (Ta = 25C, VDD = 5.0V +/- 0.25V)

Item

Symbol

Condition

Min

Typ

Max

Unit

Supply voltage for LCD drive (Std temp)

Ta = 25

°C

4.5

V

Supply voltage for LCD drive (Wide temp)

Ta = 25

°C

6.2

V

Input voltage

-

4.75

5.0

5.25

V

Input high voltage

-

-

V

Input low voltage

-V

Supply current

-

6.0

10.0

mA

LED power supply current

Vf=4.2V

-

600

-

mA

5.0 INTERFACE PIN CONNECTIONS

Pin No.

Symbol

Level

Pin Description

Function

1

DB7

Data bit 7

4-bit or 8-bit interface

2

DB6

H/L

Data bit 6

4-bit or 8-bit interface

3

-

By user

4

RS

H/L

H: Data; L: Instruction code

5

R/W

H/L

Read / write

H: Data read, L: Data write

6

E1

H, H

→L

Start signal for data read/write

7

DB0

H/L

Data bit 0

8-bit interface

8

DB1

H/L

Data bit 1

8-bit interface

9

DB2

H/L

Data bit 2

8-bit interface

10

DB3

H/L

Data bit 3

8-bit interface

11

DB4

H/L

Data bit 4

4-bit or 8-bit interface

12

DB5

Data bit 5

4-bit or 8-bit interface

13

14

VSS

5V

Supply Voltage for logic

15

Anode for LED backlight

Power supply for LED/EL backlights

16

K

0V

Cathode for LED backlight

Power supply for LED/EL backlights

H/L

VDD

E2

Register Select

LCD Contrast Adjustment

0V

H, H

→L

H/L

Enable for IC1

Ground

Enable for IC2

None

NC

−

No Connection

Start signal for data read/write

0V

5V

17

A

4.2V

18