SM16705 Datasheet, PDF (5/15 Pages) SamHop Microelectronics Corp. – 8-BIT CONSTANT CURRENT LED DRIVER

SAMHOP Microelectronics Corp.
8-BIT CONSTANT CURRENT LED DRIVER
BLOCK DIAGRAM
R-EXT
ENABLE
LATCH
SERIAL-IN
CLOCK
I-REG.
OUT0 OUT1
Q
ST D
DQ
CK
Q
ST D
DQ
CK
OUT7
Q
ST D
DQ
CK
DQ
CK
SERIAL-
OUT
TIMING DIAGRAM
CLOCK
5V
0V
SERIAL-IN
5V
0V
5V
LATCH
0V
5V
ENABLE
0V
On
OUT0
Off
On
OUT1
Off
On
OUT2
Off
On
OUT7
Off
5V
SERIAL-OUT
0V
Note : Latches are level sensitive, not rising edges sensitive and not synchronous CLOCK.
Input of LATCH-terminal to H Level, data passes latches, and input of LATCH -terminal to L level, data
hold latches.
Input of ENABLE-terminal to H Level, all output (OUT0 ~ 7) do off.
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