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| TLC5944 Datasheet, PDF (11/34 Pages) Texas Instruments – 16-Channel, 12-Bit PWM LED Driver with 6-Bit Dot Correction and Pre-Charge FET | |||
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TLC5944
www.ti.com ...................................................................................................................................................................................................... SBVS112 â JUNE 2008
tD8 only:
BLANK(1) 50%
tD8
OUTn 50% VUP
´
(1) Input pulse rise and fall time is 1 ns to 3 ns.
Figure 13. Output Timing (Pre-Charge FET)
VCC
GND
VOUTnH
VOUTnL
SIN
DC0
0A
TSU0
SCLK
XLAT
DCSEL
GS15
11B
GS15 GS15
10B 9B
TH0
GS15 GS15
8B 7B
fCLK (SCLK)
12 3 4 5
TH2
TWL0
TSU4
Keep L Level
TSU5
GS0 GS0 GS0 GS0
3B 2B 1B
0B
GS15 GS15 GS15 GS15 GS15 GS15 GS15 GS15 GS15
11C 10C 9C 8C 7C 6C 5C 4C 3C
TWH0
TSU2
189 190 191 192
1 23 45 67
TH1 TWH1 TSU3
SID Data are Transferred to GS Shift Register
BLANK
GSCLK
Shift Register Data are Transferred to GS Data Latch
TSU1
TWH1
fCLK (GSCLK)
Latched Data
for Gray Scale
(Internal)
SOUT
OUT OFF
0/4/8/12 ON
TD1
Previous Data
TD0
GS15 GS15 GS15 GS15 GS15 GS0 GS0 GS0 GS0 GS15
10A 9A 8A 7A 6A 3A 2A 1A 0A 11B
DC GS15
MSB 11A
(VOUTnH)
tR0/tF0
(VOUTnL)
OUT OFF
1/5/9/13 ON
OUT OFF
2/6/10/14 ON
Latest Data
LOD LOD LOD LOD LOD LOD LOD LOD
15 14 13 12 11 10 9
8
ON
tD3
ON
tD4
ON
tD5
tD2
tF1
tR1
OUT OFF
3/7/11/15 ON
Pre-Charge ON
MOS OFF
ON
tD6
OFF
tD8
Figure 14. Grayscale Data Write Timing
ON
OFF
Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): TLC5944
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