ST ST7735R - 10.2.11 VMOFCTR (C7 h): VCOM Offset Control

ST7735R
V0.2 142 2009-08-05
10.2.11 VMOFCTR (C7h): VCOM Offset Control
C7H VMOFCTR (VCOM Offset Control)
Inst / Para
D/CX WRX RDX D17-8 D7 D6 D5 D4 D3 D2 D1 D0 HEX
VMOFCTR
0 ↑ 1 - 1 1 0 0 0 1 1 1 (C7h)
Parameter
1 ↑ 1 - - - - VMF4 VMF3 VMF2 VMF1 VMF0
Description
-Set VCOM Voltage level for reduce the flicker issue
-Before use command 0xC7, the bit VMF_EN of command 0xD9 must be enabled (set to 1).
VMF[4] VMF[3:0] VCOM Output Level
0
0000 “VCOMS”-16d
0
0001 “VCOMS”-15d
0
| |
0
1110 “VCOMS”-2d
0
1111 “VCOMS”-1d
1
0000 “VCOMS”
1
0001 “VCOMS”+1d
1
0010 “VCOMS”+2d
1
| |
1
1110 “VCOMS”+14d
1
1111 “VCOMS”+15d
- 1d=25mV, 2d=50mV 3d=75mv....
Register
Availability
Status Availability
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
Default
Status Default Value
C7h
Power On Sequence 10h
S/W Reset 10h
H/W Reset 10h
Flow Chart