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TLC5943PWPR Datasheet(PDF) 21 Page - Texas Instruments |
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TLC5943PWPR Datasheet(HTML) 21 Page - Texas Instruments |
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21 / 43 page  www.ti.com Auto Data Refresh Function SIN SCLK BCSEL XLAT SOUT OUTn GSCLK BLANK GSShiftRegister (Internal) GSData 1stLatch(Internal) GSData 2ndLatch(Internal) GS0 4A GS0 3A GS0 3 GS0 4 GS0 2A GS0 2 GS0 1B GS0 1 GS0 0A GS0 0 BC 7A GS15 15A BC 7 BC 7A BC 6A BC 6 BC 5A BC 5 BC 4A BC 4 BC 3A BC 3 BC 2A BC 2 BC 1A BC 1 BC 0A BC 0 GS15 15B GS15 15A GS15 14A GS15 14B GS15 13B GS15 13A GS15 12B GS15 12A GS15 11A Highlevel( H )=BrightnessRegisterisselected ' ' 65,535 1 2 3 4 5 6 7 8 Lowlevel( L ) ' ' LatestGrayscaleData LatestGrayscaleData PreviousGrayscaleData PreviousGrayscaleData PreviousBrightnessData PreviousBrightnessData PWM/BrightnessControlledbyPreviousData PWM/BrightnessControlledbyLatestData PreviousBrightnessData(Bit0 Bit6) - LatestGrayscaleData LatestBrightnessData LatestBrightnessData LatestBrightnessData(Bit0 Bit6) - BCShiftRegister (Internal) BCData 1stLatch(Internal) BCData 2ndLatch(Internal) OFF ON 251 255 254 253 252 256 1 8 1 4 2 3 Lowlevel( L )=GrayscaleRegisterisselected ' ' 2 4 3 5 65,536 6 7 TLC5943 SBVS101 – DECEMBER 2007 This function allows users to input Grayscale (GS) data or Brightness Control (BC) data any time without synchronizing the input to the BLANK signal. If GS data or BC data are input during a display period, the input data are held in the first latch for each data register. Data are then transferred to the second latch when the 65,536th GSCLK occurs. The second latch data are used for the next display period. Figure 25 through Figure 27 show the timing. However, when the high level signal of BLANK occurs before the 65,536th GSCLK, then the first latch data upload to the second latch immediately. Also, when the XLAT rising edge inputs while BLANK is at a high level, then the selected shift register data are transferred to the first and second latch at the same time. Bit 7 data of BC update immediately whenever the data are written into the first latch. If there is no BLANK input when Auto Repeat is enabled. Figure 25. Auto Refresh Data Function Timing 1 Copyright © 2007, Texas Instruments Incorporated Submit Documentation Feedback 21 Product Folder Link(s): TLC5943 |
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