LH1694 データシートの表示（PDF） - Sharp Electronics

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LH1694

256-output TFT-LCD Gate Driver IC

Sharp Electronics 

LH1694

FUNCTIONAL OPERATIONS OF EACH BLOCK

BLOCK

FUNCTION

Control Logic

Used to create signals necessary for mode selecting signal, cascade sequence setting

signal and for operation of bi-directional shift register.

Bi-directional Shift

Used as transfer circuit of LCD drive output start signal. It is possible to set LCD drive

Register

output sequence of OG1/OG256 direction or OG256/OG1 direction.

Used as circuit which shifts LCD drive output signals transferred by bi-directional shift

Level Shifter

register to VDD-VEE level.

,
Output Circuit

Configured with output buffers to output VDD-VEE level.

INPUT/OUTPUT CIRCUITS

VLS

I

To Internal Circuit

Level Shifter Internal Logic

(VLS-GND/VCC-VSS) (VCC-VSS)

VSS

¿Applicable pins¡

CKV, R/L, OE1-OE3,

TEST1, TEST2

Fig. 1 Input Circuit

VLS

Output Signal

I

O

VSS

(VLS-GND)

VLS

Level Shifter

(VLS-GND/VCC-VSS)

VSS

Fig. 2 Input/Output Circuit

Output Control Signal

To Internal Circuit

¿Applicable pins¡

SVIO, SVOI

3

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