TLC5928 Datasheet, PDF (15/27 Pages) Texas Instruments – 16-Channel, Constant-Current LED Driver with LED Open Detection

TLC5928
www.ti.com ................................................................................................................................................. SBVS120A – JULY 2008 – REVISED SEPTEMBER 2008
SIN
DATA
0A
DATA DATA DATA DATA DATA
15B 14B 13B 12B 11B
SCLK
LAT
123 45
Shift Register _DATA
LSB Data (Internal) ^0A
Shift Register _DATA
LSB+1 Data (Internal) ^1A
LOD
0
DATA DATA DATA DATA
15B 14B 13B 12B
LOD
1
LOD DATA DATA DATA
0
15B 14B 13B
DATA DATA DATA
3B
2B
1B
DATA
0B
13 14 15 16
DATA DATA DATA DATA DATA DATA
15C 14C 13C 12C 11C 10C
12345 6
DATA
3B
DATA
2B
DATA
1B
DATA
0B
LOD 0A or PTW_A
DATA
15C
DATA
14C
DATA
13C
DATA
12C
DATA
11C
DATA DATA DATA
4B
3B
2B
LOD 1A or PTW_A
LOD
0A
DATA DATA DATA DATA
15C 14C 13C 12C
Shift Register _{DATA LOD LOD LOD LOD LOD}
MSB-1 Data(Internal) ^14A
14
13
12
11
10
Shift Register _{DATA LOD LOD LOD LOD LOD}
MSB Data(Internal) ^1A
15
14
13
12
11
On/Off Control
Latch Data (Internal)
SOUT
DATA
1A
LOD
15
LOD
14
LOD
13
LOD
12
LOD
11
LOD LOD DATA
1
0
15B
LOD 14A or PTW_A
LOD
13A
LOD
12A
LOD
11A
LOD
10A
LOD
9A
LOD
2
LOD
1
LOD
0
DATA
15B
LOD 15A or PTW_A
LOD
14A
LOD
13A
LOD
12A
LOD
11A
LOD
10A
Previous Grayscale Latch Data
Latest Grayscale Latch Data
LOD
2
LOD
1
LOD
0
DATA
15B
LOD 15A or PTW_A
LOD LOD LOD LOD LOD
14A 13A 12A 11A 10A
BLANK
OUTn^{(1) OFF}
ON
OFF
ON
OUTn^{(2) OFF}
ON
OFF
ON
OUTn^{(3) OFF}
ON
OFF
ON
OFF
OUTn^{(4) OFF}
ON
OFF
OFF
(1) On/off latched data are '1'.
(2) On/off latched data are changed from '1' to '0' at the second LAT signal.
(3) On/off latched data are changed from '0' to '1' at the second LAT signal.
(4) On/off latched data are '0'.
Figure 18. On/Off Control Operation
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