TLC5943_17 Datasheet, PDF (6/40 Pages) Texas Instruments – 16-Channel, 16-Bit PWM LED Driver with 7-Bit Global Brightness Control

TLC5943
SBVS101 – DECEMBER 2007
FUNCTIONAL BLOCK DIAGRAM
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VCC
SIN
SCLK
BCSEL
XLAT
GSCLK
BLANK
IREF
XTEST
GND
VCC
xlatbuf
GS Counter/
Auto Repeat/
Refresh
blankbuf
Reference
Current
Control
GND
gsclk33
16
LED Open Detection Data Latch
(16 LOD)
16
LSB
Grayscale Shift Register
(16 Bits x 16 Channels)
0
256
LSB
First Grayscale Data Latch
(16 Bits x 16 Channels)
0
256
LSB
Second Grayscale Data Latch
(16 Bits x 16 Channels)
0
LSB
MSB
Brightness Control (7 Bits) / Auto
Repeat Enable (1 Bit) Shift Register
0
8
7
LSB
MSB
First Brightness Control (7 Bits) / Auto
Repeat Enable (1 Bit) Data Latch
0
7
7
LSB
MSB
Second Brightness Control (7 Bits)
Data Latch
0
1
6
MSB
255
MSB
255
MSB
255
256
16
7
16-Bit ES PWM Timing Control
16
Output Switching Delay
(4-Channel Unit)
16
Constant Current Driver with 7-Bit
(128 Steps) Global Current Control
LED Open Detection
(LOD, 16 Channels)
XERR
Control
16
Thermal
Detection
OUT0 OUT1
¼
OUT14 OUT15
SOUT
XERR
6
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