TLC5948A Datasheet, PDF (39/50 Pages) Texas Instruments – 16-Channel, 16-Bit, ES-PWM, Full Self-Diagnosis LED Driver

TLC5948A
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TMGRST Bit
in Control Data Latch
(Internal)
BLANK Bit
in Control Data Latch
(Internal)
Unknown
'1'
'1'
'0'
1 23 4 5
16 17 18 19 20
SBVS192 – MARCH 2012
Internal BLANK is generated when the LAT
signal is input because display timing reset is enabled.
65533 65535
65534 65536
1 23 4 5
OUTn Current
for PWM Control
(GSDATA = FFFFh)
OUTn Current for IDM
0 mA
0 mA
Programmed
Output Current
2 mA, 10 mA, 20 mA
or 1 mA
(2)
(3)
LOD and LSD Data Latch
(Internal)
LOD and LSD Old Data
(1)
0 mA
0 mA
LOD and LSD data latch updated with latest
data at the clock time selected by LATTMG bit.
LOD
XXXXh
2 mA, 10 mA, 20 mA
LOD
XXXXh
16-Bit LOD and LSD
Circuit Output Data
(Internal)
LOD/LSD
0000h
Control data write
latch signal.
LAT
LOD
XXXXh
LOD
XXXXh
LOD
XXXXh
LOD data are not stable immediately after OUTn turn on.
LOD
0000h
LOD
XXXXh
GS data write latch signal.
257-Bit Common Shift
Register Data
(Internal)
Control Data
GS Data
(1) Set the current with the external resistor and DC and BC data.
(2) Select the output current with the IDMCUR bit in the control data latch.
(3) Select clock time with the LATTMG bit in the control data latch.
Figure 35. PWM Operation Timing
SID Loaded Into Common Shift Register
Copyright © 2012, Texas Instruments Incorporated
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