UPD16448A 데이터 시트보기 (PDF) - NEC => Renesas Technology

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UPD16448A

SOURCE DRIVER FOR 240-OUTPUT TFT-LCD (NAVIGATION, AUTOMOBILE LCD-TV)

NEC => Renesas Technology 

µPD16448A

1. PIN DESCRIPTION

Symbol

C1 to C3

H1 to H240

STHR

STHL

CLI1

CLI2

CLI3

INH

RESET

MP/TH

MP/1.5

Name

Video signal input

Video signal output

Cascade I/O

Shift clock input

Inhibit input

Reset input

Multiplexer circuit select input (1)

Function

Input R, G, and B video signals.

Video signal output pins. Output sampled and held video signals during

horizontal period.

Start pulse I/O pins of sample hold timing. STHR serves as an input pin

and STHL, as an output pin, in the case of right shift. In the case of left

shift, STHL serves as an input pin, and STHR, as an output pin.

A start pulse is read at the rising edge of CLI1. Sampling pulse SHPn is

generated at the rising edge of CLI1 through CLI3 during successive

sampling, and at the rising edge of CLI1 during simultaneous sampling

(for details, refer to the Timing charts in 2.FUNCTION DESCRIPTION).

Selects a multiplexer and one of the two sample and hold circuits at the

falling edge.

Resets the select counter of the multiplexer and the selector circuit of

the two sample and hold circuits when it goes high. After reset, the

multiplexer is turned OFF, so sure to input one pulse of the INH signal

before inputting the video signal. If the video signal is input without the

INH signal, sampling is not executed.

Four types of color filter arrays can be supported by combination of

MP/TH and MP/1.5.

Multiplexer circuit select input (2)

Mode

Vertical stripe array

Single-side delta array

Mosaic array

Double-side delta array

MP/TH

L

L

H

H

MP/1.5

L

H

L

H

R/L

VDD1

VDD2

VSS1

VSS2

VSS3

TEST

Shift direction select input

Logic power supply

Driver power supply

Logic ground

Driver ground

Driver ground

Test pin

R/L = H; right shift: STHR → H1 → H240 → STHL

R/L = L; left shift: STHL → H240 → H1 → STHR

3.0 V to 5.5 V

5.0 V ± 0.5 V

Connect this pin to ground of system.

Connect this pin to ground of system.

Connect this pin to ground of system.

Fix this pin to L.

4

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