MSM9005-XX 데이터 시트보기 (PDF) - Oki Electric Industry

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MSM9005-XX

DOT MATRIX LCD CONTROLLER WITH 8-DOT COMMON DRIVER AND 65-DOT SEGMENT DRIVER

Oki Electric Industry 

¡ Semiconductor

FEDL9005-03

MSM9005-xx

Command Description

1. Load pointer address command (LPA command)

This command is used to set the value of the address pointer. Execute this command before

transferring other commands, CG ROM code data and arbitrator display data.

After this command is executed, setting the C/D pin from "1" to "0" enables writing CG ROM

code data to CG ROM address RAM (CGA RAM) and arbitrator display data to arbitrator

RAM (ABRAM). After CG ROM code data or arbitrator display data is transferred, the

address pointer is automatically incremented (+1), and CG ROM code data and arbitrator

display data can be transferred continuously.

[How to transfer LPA command and CG ROM code data]

LPA

command

D8 D7 D6 D5 D4 D3 D2 D1

11*00000

*: Don't care

Specify address pointer value

(Example: Set address pointer value to 00H.)

CG ROM

code data

CG ROM

code data

CG ROM

code data

D8 D7 D6 D5 D4 D3 D2 D1

C7 C6 C5 C4 C3 C2 C1 C0 CG ROM code data is written to CGA RAM address 00H, and

the character corresponding to the specified CG ROM code

is displayed in segments 1 to 5.

After this data transfer is executed, the address pointer value

becomes 01H.

D8 D7 D6 D5 D4 D3 D2 D1

C7 C6 C5 C4 C3 C2 C1 C0 CG ROM code data is written to CGA RAM address 01H, and

the character corresponding to the specified CG ROM code

is displayed at segments 6 to 10.

After this data transfer is executed, the address pointer value

becomes 02H.

D8 D7 D6 D5 D4 D3 D2 D1

C7 C6 C5 C4 C3 C2 C1 C0 CG ROM code data is written to CGA RAM address 02H, and

the character corresponding to the specified CG ROM code

can be displayed at segments 11 to15.

After this data transfer is executed, the address pointer value

becomes 03H.

(Repeats eight times.)

CG ROM

code data

D8 D7 D6 D5 D4 D3 D2 D1

C7 C6 C5 C4 C3 C2 C1 C0

CG ROM code data is written to CGA RAM address 0BH, and

the character corresponding to the specified CG ROM code

can be displayed at segments 56 to 60.

After this data transfer is executed, the address pointer value

becomes 0CH.

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