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PCF8545 Datasheet(PDF) 25 Page - NXP Semiconductors |
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PCF8545 Datasheet(HTML) 25 Page - NXP Semiconductors |
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25 / 68 page  NXP Semiconductors PCF8545 Universal LCD driver for multiplex rates up to 1:8 001aal399 state 1 state 2 LCD segments Tfr VLCD BP0 2VLCD / 3 VLCD / 3 VSS VLCD BP1 2VLCD / 3 VLCD / 3 VSS VLCD BP2 2VLCD / 3 VLCD / 3 VSS VLCD BP3 2VLCD / 3 VLCD / 3 VSS VLCD BP4 2VLCD / 3 VLCD / 3 VSS VLCD BP5 2VLCD / 3 VLCD / 3 VSS VLCD Sn (a) Waveforms at driver (b) Resultant waveforms at LCD segment 2VLCD / 3 VLCD / 3 VSS VLCD Sn + 1 2VLCD / 3 VLCD / 3 VSS VLCD state 1 2VLCD / 3 VLCD / 3 VSS VLCD state 2 -VLCD 2VLCD / 3 -2VLCD / 3 VLCD / 3 -VLCD / 3 -VLCD -2VLCD / 3 -VLCD / 3 VSS Vstate1(t) = VSn(t) - VBP0(t). Vstate2(t) = VSn +1 (t) - VBP0(t). Von(RMS)(t) = 0.509VLCD. Voff(RMS)(t) = 0.333VLCD. Figure 15. Waveforms for 1:6 multiplex drive mode with bias 1⁄3 and line inversion PCF8545 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2021. All rights reserved. Product data sheet Rev. 2 — 4 October 2021 25 / 68 |
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