DM163 datasheet(7/21 Pages) SITI

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點晶科技股份有限公司

SILICON TOUCH TECHNOLOGY INC.

DM163

8x3-CHANNEL CONSTANT CURRENT LED DRIVERS

Version: A.004

Page

Pin Description

PIN NAME

FUNCTION

QFP pin number QFN pin number

VDDH (R)

VDDH (G)

VDDH (B)

Output protection pins.

They could be connected independently

or to LED supplies (VLED).

VDD

Power supply terminal.

VSS

Ground terminal.

VSS_DR

Driver ground

10, 11, 22, 23

Thermal pad

SIN

Serial input for grayscale data.

SOUT

Serial output for grayscale data.

DCK

Synchronous clock input for serial data

transfer. The input data of SIN is

transferred at rising edges of DCK.

SELBK

If SELBK is H, shift-in date would be

stored in the 8-bit BANK 1.

If SELBK is L, shift-in date would be

stored in the 6-bit BANK 0.

LAT_B

When LAT_B converts from H to L,

grayscale data in both shift register

banks are latched.

GCK

Clock input for PWM operation.

REXT(R)

REXT(G)

REXT(B)

External resistor connected between

REXT and GND for driver current setting.

REXT(R) controls outputs OUT0, 3, 6, 9,

12, 15, 18, 21.

REXT(G) controls outputs OUT1, 4, 7, 10,

13, 16, 19, 22.

REXT(B) controls outputs OUT2, 5, 8, 11,

14, 17, 20, 23.

IOUT0~23 LED driver outputs.

3, 4, 5, 6, 7, 8, 9,

12, 13, 14, 15,16,

17, 18, 19, 20,21,

24, 25, 26, 27,28,

29, 30

4, 5, 6, 7, 8, 9, 10,

11, 12, 13, 14, 15,

16, 17, 18, 19, 20,

21, 22, 23, 24, 25,

26, 27

EN_B

Input terminal of output enable. All

outputs are OFF when EN_B is H.

RST_B

The IC is initialized when RST_B low.

There is an internal pull-up on this pin.

This pin couldn’t be floating. Before using

the IC, it must be reset first. If each

channel is assigned to drive multiple

LEDs, IC should be reset before each

LED data latch to prevent from flashing.

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