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.
Page 149 of 233
8.2.44. Write CABC Minimum Brightness (5Eh)
5Eh Backlight Control 1
D/CX RDX WRX D17-8 D7 D6 D5 D4 D3 D2 D1 D0 HEX
Command 0 1 ↑ XX 0 1 0 1 1 1 1 0 5Eh
Parameter 1 1 ↑ XX
CMB
[7]
CMB
[6]
CMB
[5]
CMB
[4]
CMB
[3]
CMB
[2]
CMB
[1]
CMB
[0]
00
Description
This command is used to set the minimum brightness value of the display for CABC function.
CMB[7:0]: CABC minimum brightness control, this parameter is used to avoid too much brightness reduction.
When CABC is active, CABC cannot reduce the display brightness to less than CABC minimum brightness setting. Image
processing function is worked as normal, even if the brightness cannot be changed.
This function does not affect to the other function, manual brightness setting. Manual brightness can be set the display
brightness to less than CABC minimum brightness. Smooth transition and dimming function can be worked as normal.
When display brightness is turned off (BCTRL=0 of “Write CTRL Display (53h)”), CABC minimum brightness setting is
ignored.
In principle relationship is that 00h value means the lowest brightness for CABC and FFh value means the highest
brightness for CABC.
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
CMB [7:0]
Power On Sequence 8’h00h
SW Reset No Change
HW Reset 8’h00h