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.
DM634
Tel：886-3-5645656
Fax：886-3-5645626
Pin Connection
1
2
3
4
24
23
22
21
GND
DAI
VCC
REXT
DCK
LAT
DAO
SOMODE/GCK
OUT 15
OUT 14
OUT 13
OUT 12
OUT 11
OUT 10
OUT 9
SOP24
SSOP24
5
20
19
18
17
16
15
14
13
OUT0
OUT1
OUT2
OUT3
OUT4
6
7
TSSOP24E
8
9
10
11
12
OUT5
OUT6
OUT7
( top view )
OUT 8
Pin Description
PIN No.
PIN NAME
GND
FUNCTION
SOP24/SSOP24/TSSOP24E: 1
TSSOP24E: exposed pad
Ground terminal.
SOP24/SSOP24/TSSOP24E: 2
SOP24/SSOP24/TSSOP24E: 3
DAI
Serial data input terminal.
Synchronous clock input terminal for serial data
transfer. Data is sampled at the rising edge of DCK.
DCK
Input terminal of data strobe:
‘H’ means data on shift register goes through
latch
SOP24/SSOP24/TSSOP24E: 4
LAT
(level trigger),
‘L’ means data is latched.
SOP24/SSOP24/TSSOP24E: 5~20
OUT0~15 Sink constant-current outputs (open-drain).
Serial Out Mode Selection(SOMODE) :
‘H’: DAO is shifted out and synchronized to
falling edge of DCK,
SOMODE
/GCK
SOP24/SSOP24/TSSOP24E: 21
‘L’ : DAO is shifted out and synchronized to
rising edge of DCK.
Gray Scale Clock(GCK) : Input terminal for PWM
operation.
SOP24/SSOP24/TSSOP24E: 22
SOP24/SSOP24/TSSOP24E: 23
SOP24/SSOP24/TSSOP24E: 24
DAO
REXT
VCC
Serial data output terminal.
External resistors connected between REXT and
GND for output current value setting.
Supply voltage terminal.
16-channel 16-bit PWM Constant Current LED Driver
Version : A.003
Page 3
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