Data Sheet S15809EJ1V0DS

7

µµµµ PD16704

3. PIN FUNCTIONS

(1/2)

Pin Symbol

Pin Name

Pad No

I/O

Description

Driver output

294 - 55

Output

These pins output scan signals that drive the vertical direction (gate lines) of

a TFT-LCD. The output signals change in synchronization with the rising

R,/L

Shift direction

select input

18, 19

Input

R,/L = H (right shift) : STV

R,/L = L (left shift) : STV

STV

Start pulse

input/output

20, 21

I/O

This is the input of the internal shift register. The start pulse is written at the

rising edge of shift clock CLK. The pulse range is less than one cycle of

CLK

Shift clock input

22, 23

Input

This pin inputs a shift clock to the internal shift register.

The shift operation is performed in synchronization with the rising edge of

this input.

OE

Output enable

input

26, 27

Input

The shift register is not cleared. Refer to 4. TIMING CHART for details.

DS

Double scan

control input

16, 17

Input

This pin outputs scan signals simultaneously from two outputs in

synchronization with the rise of CLK when DS = H is written. Refer to 4.

TIMING CHART for details.

DSOE

Double scan pulse

width control input

28, 29

Input

This pin controls the fall timing of one of the scan signals (the output side in

normal scan mode) when the DS signal is used to output scan signals

simultaneously from two outputs. This signal is input asynchronously to the

clock. Refer to 4. TIMING CHART for details.

VCC,

VCCC

IC internal

reference voltage

34, 35,

36, 37

–

Short the VCC pin to the VCCC pin so that these pins are in a floating state.

TEST1,

TEST2

TEST pins

1, 2,

47, 48

–

Short TEST1 and TEST2 separately inside the IC. These pins are not

connected to any other pins inside the IC.

Dummy

Dummy pin

11, 24, 25, 38,

49, 50, 54,

295, 299, 300

–

No dummy pins are connected to any other pins inside the IC.

Logic power

supply

12 - 15

–

3.3

± 0.3 V

Driver positive

power supply

51 - 53,

296 - 298

–

15 to 25 V

The driver output: high level