TLC5943_17 Datasheet, PDF (23/40 Pages) Texas Instruments – 16-Channel, 16-Bit PWM LED Driver with 7-Bit Global Brightness Control

TLC5943
www.ti.com
SBVS101 – DECEMBER 2007
SIN
GS0 GS0 GS0 GS0
4A 3A 2A 1B
GS0
0A
BC
BC BC BC BC BC BC
7A
6A 5A 4A 3A 2A 1A
BC
0A
SCLK
251 252 253 254 255 256
BCSEL
Low level ('L') = Grayscale Register is selected
1234567 8
High level ('H') = Brightness Register is selected
GS15 GS15 GS15 GS15
15B 14B 13B 12B
123 4
XLAT
GSCLK
12 3 4 5 6 7 8
BLANK
Low level ('L')
GS Shift Register
(Internal)
Latest Grayscale Data
GSData
1st Latch (Internal)
Previous Grayscale Data
Latest Grayscale Data
GSData
2nd Latch (Internal)
Previous Grayscale Data
Latest Grayscale Data
BC Shift Register
(Internal)
Previous Brightness Data
Latest Brightness Data
BCData
1st Latch (Internal)
Previous Brightness Data
Latest Brightness Data
BCData
2nd Latch (Internal)
Previous Brightness Data (Bit 0-Bit 6)
Latest Brightness Data (Bit 0-Bit 6)
OFF
OUTn
ON
PWM/Brightness Controlled by Previous Data
PWM/Brightness Controlled by Latest Data
SOUT
GS0 GS0 GS0 GS0 GS0
4
3
2
1
0
GS15
15A
BC
BC BC BC BC BC BC BC BC GS15 BC
7
6
5
4
3
2
1
0 7A 15A 7A
When the BLANK input occurs with XLAT.
Figure 27. Auto Refresh Data Function Timing 3
GS15 GS15 GS15 GS15 GS15
15A 14A 13A 12A 11A
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