LH1687 데이터 시트보기 (PDF) - Sharp Electronics

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LH1687

240-output TFT-LCD Source Driver IC

Sharp Electronics 

SYMBOL

RL

PS

MODE

VA

VB

VC

OS1-OS240

LH1687

FUNCTION

Used as input pin for setting the shift direction of video signal sampling sequence and the

selecting input/output of SPIO/SPOI pins.

Video signals are sampled in order of OS1/OS240, set SPIO to input of operation start

signal and set SPOI to output of operation start signal of next IC when set RL to "H".

Video signals are sampled in order of OS240/OS1, set SPOI to input of operation start

signal and set SPIO to output of operation start signal of next IC when set RL to "L".

Used as input pin for setting of power save mode.

LCD drive output pins output voltage corresponding to video signals held in the sample

and hold circuits when set PS to "H".

The LH1687 is set low power mode by setting high-impedance condition and cutting off

current source of LCD drive outputs when set PS to "L".

Used as input pin for setting video signals for sampling in the sample and hold circuits.

By mode setting circuit, video signals are sampled and output in order of VB, VA, and VC

when set to "H" and in order of VC, VB, and VA when set to "L" with respect to OS1 to

OS240 .

Used as input pins of video signals.

VB, VA, VC, π VB, VA, VC or VC, VB, VA, π VC, VB, VA are input with respect to LCD drive

outputs OS1, OS2, OS3, π OS238, OS239, OS240 by MODE pin setting condition.

Used as LCD drive output pins.

Voltage corresponding to video signals held in the sample and hold circuits is output when

set to PS = "H", and becomes high-impedance condition when set to PS = "L".

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