TLC5951 Datasheet, PDF (25/46 Pages) Texas Instruments – 24-Channel, 12-Bit PWM LED Driver with 7-Bit Dot Correction and 3-Group, 8-Bit Global Brightness Control

TLC5951
www.ti.com
PWM Counter 12-Bit Mode Without Auto Repeat
XBLNK⁽¹⁾
GSCKR
GSCKG
GSCKB
OUTRn/Gn/Bn
(GSDATA = 000h)
OFF (V_OUTRn/Gn/BnH)
ON (V_OUTRn/Gn/BnL)
1 2 3 4¼
¼
2048
2049
2050
GS counter starts to count GSCKR/G/B after
XBLNK goes high.
Drivers do not turn on when Grayscale data are zero.
OUTRn/Gn/Bn
(GSDATA = 001h)
OFF
ON
T = GSCKR/G/B ´ 1
OUTRn/Gn/Bn
(GSDATA = 002h)
OFF
ON
T = GSCKR/G/B ´ 2
OUTRn/Gn/Bn
(GSDATA = 003h)
OFF
ON
T = GSCKR/G/B ´ 3
SBVS127B – MARCH 2009 – REVISED DECEMBER 2009
4095
4096
4097 ^¼
1 234 ^¼
¼
¼
(V_OUTRn/Gn/BnH)
(V_OUTRn/Gn/BnL)
(V_OUTRn/Gn/BnH)
(V_OUTRn/Gn/BnL)
(V_OUTRn/Gn/BnH)
(V_OUTRn/Gn/BnL)
OUTRn/Gn/Bn
(GSDATA = 7FFh)
OFF
ON
OUTRn/Gn/Bn
(GSDATA = 800h)
OFF
ON
OUTRn/Gn/Bn
(GSDATA = 801h)
OFF
ON
T = GSCKR/G/B ´ 2047
T = GSCKR/G/B ´ 2048
T = GSCKR/G/B ´ 2049
(V_OUTRn/Gn/BnH)
(V_OUTRn/Gn/BnL)
(V_OUTRn/Gn/BnH)
(V_OUTRn/Gn/BnL)
(V_OUTRn/Gn/BnH)
(V_OUTRn/Gn/BnL)
OUTRn/Gn/Bn
(GSDATA = FFDh)
OFF
ON
OUTRn/Gn/Bn
(GSDATA = FFEh)
OFF
ON
T = GSCKR/G/B ´ 4093
T = GSCKR/G/B ´ 4094
(V_OUTRn/Gn/BnH)
(V_OUTRn/Gn/BnL)
(V_OUTRn/Gn/BnH)
(V_OUTRn/Gn/BnL)
OUTRn/Gn/Bn
(GSDATA = FFFh)
OFF
ON
T = GSCKR/G/B ´ 4095
OUTRn/Gn/Bn turns on at the first rising edge of GSCKR/G/B after
XBLNK goes high except when Grayscale data are zero.
(V_OUTRn/Gn/BnH)
(V_OUTRn/Gn/BnL)
OUTRn/Gn/Bn does not turn on again until XBLNK goes low once
in case of no auto repeat mode.
(1) The internal blank signal is generated when GSLAT is input for GS data with display timing reset enabled. Also, the signal is generated at
4096th GSCKR/G/B when the auto repeat mode is enabled. XBLNK can be connected to VCC when the display timing reset or auto repeat is
enabled.
Figure 41. PWM Operation 1
Copyright © 2009, Texas Instruments Incorporated
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