KS0678

6 BIT 420 CHANNEL TFT-LCD SOURCE DRIVER

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INTRODUCTION

The KS0678 is a 420 channel output, TFT-LCD source driver for 64 gray scale displays. Data input is based on

digital input consisting of 6 bits by 6 dots, which can realize a full-color display of 260,000 colors by output of 64

values gamma-corrected.

This device has an internal D/A (Digital-to-Analog) converter for each output and 10 (5-by-2) external power

supplies. Because the output dynamic range is as large as 4.8 - 7.8 Vp-p, it is unnecessary to operate level

inversion of the LCD's common electrode. Besides, to be able to deal with dot-line inversion when mounted on a

single-side, output gray scale voltages with different polarity can be output to the odd number output pins and the

even output pins.

KS0678 can be adopted to larger panel, and SHL (shift direction selection) pin makes use of the LCD panel

connection conveniently. Maximum operation clock frequency is 45 MHz at a 2.7 V logic operation. it can be

applied to the TFT-LCD panel of SXGA+(1400 * RGB) standards.

FEATURES

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TFT active matrix LCD source driver LSI

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64 Gary-scale is possible through 10 (5 by 2) external power supply and D/A converter

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Both dot inversion display and N-line inversion display are possible

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CMOS level input

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Compatible with gamma-correction

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Input data inversion function (DATPOL1, 2)

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Logic supply voltage: 2.7 - 3.6 V

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LCD driver supply voltage: 5.0 - 8.0 V

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Output dynamic range: 4.8 - 7.8 Vp-p

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Maximum operating frequency: fMAX = 45 MHz (internal data transmission rate at 2.7 V operation)

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Output: 420 outputs

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