ST7920
Initial Setting (Register flag) (RE=0: basic instruction)
Code
Inst.
Description
RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
0
0
0
0
0
0
1
I/D
S
Entry Mode
Set
Cursor move to right ,DDRAM address counter (AC) plus 1
1
0
0
0
0
0
0
0
1
D
C
0
B
0
Display
Control
Display, cursor and blink are ALL OFF
No cursor or display shift operation
8-bit MPU interface , basic instruction set
0
CURSOR
DISPLAY
SHIFT
0
0
0
0
0
0
0
0
0
1
1
S/C R/L
X
X
X
X
0
DL
X
X
X
FUNCTION
SET
RE
1
0
Initial Setting (Register flag) (RE=1: extended instruction set)
Code
Inst.
Description
RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
SCROLL
0
0
0
0
0
0
0
0
1
1
SR
0
OR RAM
ADDR.
Allow vertical scroll or set CGRAM address
SELECT
0
0
0
0
0
0
0
0
0
1
0
0
R1 R0
REVERSE
Begin with normal and toggle to reverse
Graphic display OFF
0
G
0
0
0
1
EXTENDED
FUNCTION
SET
DL
X
RE
V4.0
18/49
2008/08/18
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
