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PCF8545ATT/A датащи(PDF) 24 Page - NXP Semiconductors |
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PCF8545ATT/A датащи(HTML) 24 Page - NXP Semiconductors |
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24 / 72 page ![]() PCF8545 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved. Product data sheet Rev. 1 — 13 November 2013 24 of 72 NXP Semiconductors PCF8545 Universal LCD driver for multiplex rates up to 1:8 8.5 LCD drive mode waveforms 8.5.1 1:4 Multiplex drive mode When four backplanes are provided in the LCD, the 1:4 multiplex drive mode applies, as shown in Figure 14. This drawing is also showing the case of line inversion (see Section 8.1.3.2). Vstate1(t) = VSn(t) VBP0(t). Vstate2(t) = VSn(t) VBP1(t). Von(RMS)(t) = 0.577VLCD. Voff(RMS)(t) = 0.333VLCD. Fig 14. Waveforms for the 1:4 multiplex drive mode with 1⁄3 bias and line inversion |
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