ST7687S Datasheet, PDF (86/195 Pages) Sitronix Technology Co., Ltd. – 128RGB x 128 dot 65K Color with Frame Memory Single-Chip CSTN Controller/Driver

ST7687S
8.1.15. APOFF: All Pixels Off (22h) (Only for Test Purposes)
Command
A0 /RD /WR D7 D6 D5 D4 D3 D2 D1 D0
APOFF
0
1
0
0
0
1
0
0
0
1
0
Parameter
No Parameter
Hex
(22h)
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.
Restriction This command has no effect when module is already All Pixel Off mode.
Register
Availability
Status
Normal Mode On, Idle Mode Off, Sleep Out
Yes
Normal Mode On, Idle Mode On, Sleep Out
Yes
Partial Mode On, Idle Mode Off, Sleep Out
Yes
Partial Mode On, Idle Mode On, Sleep Out
Yes
Sleep In
Yes
Availability
Default
Status
Power On Sequence
S/W Reset
H/W Reset
Default Value
All pixel off mode disable
All pixel off mode disable
All pixel off mode disable
Ver1.4
86/195
2009/10