點晶科技股份有限公司

SILICON TOUCH TECHNOLOGY INC

.

新竹市科學園區展業一路9號7樓之1

9-7F-1, Prosperity RoadⅠ, Hsin-Chu, Taiwan, R.O.C.

Tel：886-3-5645656

Fax：886-3-5645626

3-CHANNEL CONSTANT CURRENT LED DRIVERS

Version:A.002

Page 3

DM413

Pin Connection

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

ROUT

GOUT

BOUT

GND

VCC

DAI

CKI

STB

DAO

MOD

POL

SDO

RREX

GREX

BREX

CKO

Pin Description

PIN No.

PIN NAME

FUNCTION

1

DAO

Serial data output terminal.

2

CKO

Clock output terminal.

3

MOD

Input mode selection:

‘H’ for 13bits/5byte mode,

‘L’ for 14bits/4byte mode,

‘Floating’

*1

for 8bits/3byte mode.

4

POL

PWM current output polarity selection:

‘H’ for positive polarity,

‘L’ for negative polarity.

5~7

R(G、B)OUT Sink constant current outputs (open-drain).

8

GND

Ground terminal.

9~11

R(G、B)REX

External resistors connected between REXTR(G、B) and GND for

driver current value setting.

12

SDO

Serial data output trigger mode selection:

‘H’ means data is shifted out on synchronization to falling edge of CKO,

‘L’ means data is shifted out on synchronization to rising edge of CKO.

13

STB

Input terminal of data strobe:

‘H’ means data is latched,

‘L’ means data on shift register goes through latch (level latch).

14

CKI

Synchronous clock input terminal for serial data transfer. Data is

sampled at the rising edge of CKI.

15

DAI

Serial data input terminal.

16

VCC

Power supply terminal.