ST7628
9.1.17 APOFF: All Pixels Off (22h) (Only for Test Purposes)
Command
APOFF
A0
/RD /WR
D7
D6
D5
D4
D3
D2
D1
D0
Hex
0
0
1
0
0
0
1
0
(22h)
0
1
0
Parameter
No Parameter
Description
This command is only used for test purpose e.g. pixel response time (on/off) measurements on
the passive matrix display. Therefore, it is possible that this command is not used for final
product software.
All driver outputs become “Low” data state and display becomes black.
This command makes no change of contents of display memory.
This command does not change any other status.
Exit commands are “All Pixels On”, “Normal Display Mode On” and “Partial Display On”.
The display is showing the contents of the frame memory after “Normal Display Mode On” and
“Partial Display On” commands.
(Example)
Memory
Display
Restriction
Register
This command has no effect when module is already All Pixel Off mode.
Status
Availability
Yes
Availability
Normal Mode On, Idle Mode Off, Sleep Out
Normal Mode On, Idle Mode On, Sleep Out
Partial Mode On, Idle Mode Off, Sleep Out
Partial Mode On, Idle Mode On, Sleep Out
Sleep In
Yes
Yes
Yes
Yes
Default
Status
Default Value
Power On Sequence
All pixel off mode disable
All pixel off mode disable
All pixel off mode disable
S/W Reset
H/W Reset
Ver 1.4
100/213
2008/08
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
