TLC5905 Datasheet, PDF (3/27 Pages) Texas Instruments – LED DRIVER

functional block diagram
MCENA
BCENA
RSEL0
RSEL1
SIN
XENABLE
SCLK
SOMODE
XOE
XLATCH
MODE
Shift Register and Data Latch
OVM
Shift Register
Data Latch
SCLK
Controller
Brightness Control
Shift Register
Data Latch
Gray Scale Control
Shift Register
Data Latch
GSCLK
BLANK
8 bits
Gray Scale
Counter
TSENA
WDTRG
WDCAP
TSD
WDT
DELEY
DELEY
16 x 8 bits
Comparator
TLC5905
LED DRIVER
SLLS401 – NOVEMBER 1999
SOUT
GSOUT
BOUT
XDOWN1
XDOWN2
IREF
Current Reference
Circuit
16 bits
Constant Current Driver
16 bits
OVM Comp
LATCH
OUT0
OUT15
NOTE: All the input terminals are with Schmitt-triggered inverter except IREF and WDCAP.
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