ST7920 데이터 시트보기 (PDF) - Unspecified

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ST7920

Chinese Fonts built in LCD controller/driver

Unspecified 

ST7920

Description of basic instruction set

l Display Clear

RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

Code 0 0 0 0 0 0 0 0 0 1

This instruction will change the following items:

1. Fill DDRAM with "20H"(space code).

2. Set DDRAM address counter (AC) to"00H".

3. Set Entry Mode I/D bit to be "1". Cursor moves right and AC adds 1 after write or read operation.

l Return Home

RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

Code 0 0 0 0 0 0 0 0 1 X

Set address counter (AC) to "00H". Cursor moves to origin. Then content of DDRAM is not changed.

l Enry Mode Set

RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

Code 0 0 0 0 0 0 0 1 I/D S

Set the cursor movement and display shift direction when doing write or read operation.

I/D: Address Counter Control: (Increase/Decrease)

When I/D = "1", cursor moves right, address counter (AC) is increased by 1.

When I/D = "0", cursor moves left, address counter (AC) is decreased by 1.

S: Display Shift Control: (Shift Left/Right)

S

I/D

DESCRIPTION

H

H Entire display shift left by 1

H

L Entire display shift right by 1

V4.0

19/49

2008/08/18

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