ST7920-0C View Datasheet(PDF) - Sitronix Technology Co., Ltd.
Part Name
Description
MFG CO.
'ST7920-0C' PDF : 49 Pages View PDF
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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