ST7531 Datasheet, PDF (38/85 Pages) Sitronix Technology Co., Ltd. – 65K Color Dot Matrix LCD Controller/Driver

ST7531
EXT= “0” or “1”
(1) Extension instruction disable (EXT IN) - Parameter Byte: None (30H)
Use the “EXT=0” command table
Command
A0 RD WR D7 D6 D5 D4 D3 D2 D1 D0
0
1
0
0
0
1
1
0
0
0
0
(2) Extension instruction enable (EXT OUT) - Parameter Byte: None (31H)
Use the extended command table EXT=”1”
A0 RD WR D7 D6 D5 D4 D3 D2 D1 D0
Command
0
1
0
0
0
1
1
0
0
0
1
EXT= “0”
(1) Display ON (DISON) - Parameter Byte: None (AFH)
It is to turn the display on. When the display is turned on, segment and common outputs are generated at the level
corresponding to the display data and display timing. As long as the sleep mode is selected, the display cannot be turned
on. Thus, whenever using this command, the sleep mode must be cancelled first.
A0
RD
WR
D7
D6
D5
D4
D3
D2
D1
D0
Command
0
1
0
1
0
1
0
1
1
1
1
(2) Display OFF (DISOFF) - Parameter Byte: None (AEH)
It is to forcibly turn the display off. As long as the display is turned off, every segment and common outputs are forced to
VSS level.
A0
RD
WR
D7
D6
D5
D4
D3
D2
D1
D0
Command
0
1
0
1
0
1
0
1
1
1
0
(3) Normal display (DISNOR) - Parameter Byte: None (A6H)
It is to normally highlight the display area without modifying contents of the display data RAM.
A0
RD
WR
D7
D6
D5
D4
D3
D2
D1
D0
Command
0
1
0
1
0
1
0
0
1
1
0
(4) Inverse display (DISINV) - Parameter Byte: None (A7)
It is to inversely highlight the display area without modifying contents of the display data RAM. This command does not
invert non-display areas in case of using partial display.
A0
RD
WR
D7
D6
D5
D4
D3
D2
D1
D0
Command
0
1
0
1
0
1
0
0
1
1
1
Ver 1.8
38/85
2006/9/18