LH1687 Ver la hoja de datos (PDF) - Sharp Electronics

Número de pieza

componentes Descripción

Fabricante

LH1687

240-output TFT-LCD Source Driver IC

Sharp Electronics 

Timing Chart for PS Operation

CK

1

PS

OS1-OS240

LH1687

1

2

Sampling Data Output Period

Output Hi-impedance Period

Timing Chart for CTR Operation

CK

1

2

1

CTR

OS1-OS240

Sampling Data Output Period

2

Sampling of System A

&

Output Period System B

Sampling of System B

&

Output Period System A

Sampling of System A

&

Output Period System B

PRECAUTIONS

Precautions when connecting or disconnecting

the power supply

This IC has some power supply pins, so it may be

permanently damaged by a high current which may

flow if voltage is supplied to the LCD drive power

supply while the logic system power supply is

floating. Therefore, when connecting the power

supply, set the logic system input pins (SPIO,

SPOI, CK, CTR, MODE, SAME, RL, PS, TST1,

TST2, TST3, TST4) after supplying the voltage to

the logic system power supply pin (VCCL), and next

supplying the voltage to the LCD drive system

power supply pin (VCCA). Finally, set the LCD drive

system input pins (VA, VB, VC, TST5).

When disconnecting the power supply, follow the

reverse sequence.

When connecting or disconnecting the power

supply follow the recommended sequence shown

here.

16

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