TLC59401 Datasheet, PDF (17/29 Pages) Texas Instruments – 16-CHANNEL LED DRIVER WITH DOT CORRECTION AND GRAYSCALE PWM CONTROL

TLC59401
www.ti.com
SBVS137 – DECEMBER 2009
To input data into the dot correction register, MODE must be set to V_CC. The internal input shift register is then
set to 96-bit width. After all serial data are clocked in, a rising edge of XLAT is used to latch the data into the dot
correction register. Figure 16 shows the dc data input timing chart.
DC Mode Data
Input Cycle n
V_CC
DC Mode Data
Input Cycle n+1
MODE
SIN
DC n−1
LSB
DC n
MSB
DC n
MSB−1
DC n
MSB−2
DC n
LSB+1
DC n
LSB
DC n+1
MSB
DC n+1
MSB−1
SCLK
t_wh0
1
2
3
95
96
1
2
SOUT
DC n−1
MSB
DC n−1
MSB−1
t_wl0
DC n−1
MSB−2
XLAT
DC n−1 DC n−1
LSB+1
LSB
t_su1
DC n
MSB
t_wh2
t_h1
DC n
DC n
MSB−1 MSB−2
Figure 16. Dot Correction Data Input Timing Chart
When the IC is powered on, the data in the input shift register and DC register are not set to any default values.
Therefore, DC data must be written to the DC register before turning on the constant-current output.
Copyright © 2009, Texas Instruments Incorporated
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