ST2221C Datasheet, PDF (9/17 Pages) List of Unclassifed Manufacturers – 16 BIT CONSTANT CURRENT LED DRIVERS

點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
Timing Diagram
1. CLOCK-SERIAL-IN, SERIAL-OUT, OUTn
t_r
t_f
t_wCLK
CLOCK
t_setup
90%
50%
10%
t_hold
90%
50%
10%
t_wCLK
50%
SERIAL-IN
OUTn (current)
SERIAL-OUT
50%
50%
t_or
90%
50%
10%
t_pLH
2. CLOCK-LATCH
50%
t_pLH
t_of
90%
50%
10%
t_pHL
50%
CLOCK
50%
50%
t_pHL
ST2221C
SERIAL-IN
LATCH
3. ENABLE-OUTn
ENABLE
OUTn
“L” level = DATA HOLD
t_hold(L)
50% 50%
t_setup(L)
50%
t_pLH
50%
50%
t_pHL
50%
16-Bit Constant Current LED Drivers
-8-
Version：A.004