ST7789V2 datasheet(152/319 Pages) SITRONIX

152 / 319 page

ST7789V2

Version 1.0

Page 152 of 319

2016/11

Sitronix Confidential

The information contained herein is the exclusive property of Sitronix and shall not be distributed, reproduced, or

disclosed in whole or in part without prior written permission of Sitronix.

8.22 Content Adaptive Brightness Control (CABC)

8.22.1 Definition of CABC

A Content Adaptive Brightness Control function can be used to reduce the power consumption of the

luminance source. Content adaptation means that content gray level scale can be increased while

simultaneously lowering brightness of the backlight to achieve same perceived brightness. The adjusted gray

level scale and thus the power consumption reduction

Definition of Modes and target power reduction ratio:

Off mode: Content Adaptive Brightness Control functionality is totally off.

UI [User interface] image mode: Optimized for UI image. It is kept image quality as much as possible. Target

power consumption reduction ratio: 10% or less.

Still picture mode: Optimized for still picture. Some image quality degradation would be acceptable. Target power

consumption reduction ratio: more than 30%.

Moving image mode: Optimized for moving image. It is focused on the biggest power reduction with image

quality degradation. Target power consumption reduction ratio: more than 30%.

Note 1: Updating partial area of the image data should be supported by CABC functionality.

Note 2: Processing power consumption of CABC should be minimized.

Note 3: Customer need program OTP GAMMA when using CABC.

ST7789V2 Datasheet(PDF) 152 Page - Sitronix Technology Co., Ltd.