HX8257-A Datasheet | Himax

Description HX8257-A is a single chip digital driver supporting 480RGBX272 or 480RGBX240 resolution. The single chip includes Source, Gate, TCON, and Power circuits. The driver receives 24-bit digital display data with single clock edge and generates corresponding 64 level gray scale voltage outputs with dithering function to realize 16M colors display. Positive and negative polarity voltages can be alternately output from each channel in line (row) inversion driving method. HX8257-A can be applied on dual gate TFT LCD panel. Source line is half with 720 channels and gate line is double with 544 or 480 channels. Below is a rough panel layout for double gate. Himax Confidential This information contained herein is the exclusive property of Himax and shell not be distributed, reproduced, or disclosed in whole or in part without prior written permission of Himax. Subject to change without notice. -P.1December 2007 480X272 TFT LCD Single Chip Digital Driver Preliminary Data Sheet V01 2. Features Support 480RGBx272 or 480RGBx240 graphics display TFT LCD panel 64 gray level with 2 bit dithering function to realize 16M colors Support 8-bit serial RGB data and 24-bit parallel RGB data input Power supply: -- VDDIO: 1.8 ~ 3.6V -- VCI: 3 ~ 3.6V Built in 1.8V LDO for internal logic circuit Maximum gate driving output range: 30Vp-p Source output range: 0.1 ~ VLCD - 0.1 Source and gate scan direction control 720 source output and 544 gate output Programmable gamma correction curve Support contrast/brightness adjustment Support PAL decimation in 480RGBx240 resolution Non-Volatile Memory (OTP) for V calibration On-chip DC-DC converter for gate driver VGH/VGL and panel AC V signal PWM control function to generate power for backlight CABC function is embedded COG package Himax Confidential -P.2- This information contained herein is the exclusive property of Himax and shell not be distributed, reproduced, or disclosed in whole or in part without prior written permission of...