TLC5940_15 Datasheet, PDF (19/38 Pages) Texas Instruments – 16-Channel LED Driver

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TLC5940
SLVS515D – DECEMBER 2004 – REVISED NOVEMBER 2015
V_CC
VPRG
DC Mode Data
Input Cycle n
SIN
DC n−1
LSB
DC n
MSB
DC n
MSB−1
DC n
MSB−2
DC n
LSB+1
SCLK
SOUT
t_wh0
1
2
3
DC n−1
MSB
DC n−1
MSB−1
t_wl0
DC n−1
MSB−2
XLAT
95
96
DC n−1 DC n−1
LSB+1
LSB
t_su1
DC n
LSB
DC n
MSB
t_wh2
t_h1
DC Mode Data
Input Cycle n+1
DC n+1
MSB
DC n+1
MSB−1
1
2
DC n
DC n
MSB−1 MSB−2
Figure 15. Dot Correction Data Input Timing Chart
The TLC5940 also has an EEPROM to store dot correction data. To store data from the dot correction register to
EEPROM, DCPRG is set to high after applying V_PRG to the VPRG pin. Figure 16 shows the EEPROM
programming timings. The EEPROM has a default value of all 1 s.
VPRG
VCC
DCPRG
V(PRG)
t_su6
t_prog
t_h5
XLAT
SIN
DC
MSB
DC
LSB
SCLK
1
96
SOUT
-
DC
MSB
Figure 16. EEPROM Programming Timing Chart
DCPRG
OUT0
(Current)
t_pd5
t_pd5
OUT15
(Current)
Figure 17. DCPRG and OUTn Timing Diagram
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