LD1961A datasheet(3/23 Pages) LDT

Part #	LD1961A

Description	12 SEGMENT X 7 GRID LED Driver

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Manufacturer	LDT [LDT Co., Ltd]

Direct Link	http://www.ldt.co.kr/

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Ver1.0

3

LD1961A

12 SEGMENT X 7 GRID LED Driver with key scan

PIN DESCRIPTION

PIN NAME

OSC

CLK

STB

VDD

SEG1/KS1 to

SEG10/KS10

SEG12/GR7

GR6 to GR1

I/O

I

-

O

DESCRIPTION

Oscillator Input pin.

This pin is recommended open for operation.

Serial clock input pin.

Input data is trigger at rising edge.

Output data is trigger at falling edge.

When this pin is HIGH, CLK signal is ignored.

The data input after the STB has fallen is processed

as a command.

Power Supply

Segment output pins. ( P-channel open drain)

Also key scan source pins.

Segment / Grid output pin.

Grid output pins

PIN No.

1

DIN

I

Serial Data Input pin.

This pin inputs serial data at the rising edge of CLK signal.

LSB first input.

3

4

5

9,25

10 ~ 12

14 ~ 20

22

23,24,27,

28,30,31

Serial Data Output Pin ( N-channel open drain)

This pin outputs at CLK falling edge.

2

DOUT

O

K1,K2,k3

I

Key scan input pins.

This pins are operated with SEG1/KS1 to SEG10/KS10 pins.

This pins have Pull down resistor internally.

6,7,8

SEG11

O

Segment output pins. ( P-channel open drain)

21

GND

-

Ground Pin

26,29,32

NC

-

No connection

13

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