Data Sheet

a-Si TFT LCD Single Chip Driver
240RGBx320 Resolution and 262K color
ILI9341
The information contained herein is the exclusive property of ILI Technology Corp. and shall not be distributed,
reproduced, or disclosed in whole or in part without prior written permission of ILI Technology Corp.
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8.3.13. Backlight Control 5 (BCh)
BCh Backlight Control 5
D/CX RDX WRX D17-8 D7 D6 D5 D4 D3 D2 D1 D0 HEX
Command 0 1 ↑ XX 1 0 1 1 1 1 0 0 BCh
Parameter 1 1 ↑ XX DIM2 [3] DIM2 [2] DIM2 [1] DIM2 [0] 0 DIM1 [2] DIM1 [1] DIM1 [0] 44
Description
DIM1 [2:0] : This parameter is used to set the transition time of brightness level to avoid the sharp brightness transition on
vision.
DIM1 [2:0] Description
3’0h
1 frame
3’1h
1 frame
3’2h
2 frames
3’3h
4 frames
3’4h
8 frames
3’5h
16 frames
3’6h
32 frames
3’7h
64 frames
Time
DIM1[2:0]
DIM1[2:0]
Brightness =A
Brightness =B
Brightness =C
Transition
time
Transition
time
DIM2[2:0]
DIM2 [3:0] : This parameter is used to set the threshold of brightness change.
When the brightness transition difference is smaller than DIM2 [3:0], the brightness transition will be ignored.
For example:
If | brightness B – brightness A| < DIM2 [2:0], the brightness transition will be ignored and keep the brightness A.
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
Default Value
Status
DIM2 [3:0] DIM1 [2:0]
Power On Sequence 4’b0100 4’b0100
SW Reset No change No change
HW Reset 4’b0100 4’b0100