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PCF8534 Datasheet(PDF) 9 Page - NXP Semiconductors |
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PCF8534 Datasheet(HTML) 9 Page - NXP Semiconductors |
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9 / 40 page  PCF8534_0 © NXP B.V. 2007. All rights reserved. Preliminary datasheet Rev. 00.05 — 20 February 2007 9 of 40 NXP Semiconductors PCF8534 Universal LCD driver for low multiplex rates 6.4 LCD drive mode waveforms 6.4.1 Static drive mode The static LCD drive mode is used when a single backplane is provided in the LCD. Backplane and segment drive waveforms for this mode are shown in Figure 4. Vstate1(t) = Vsn(t) − VBP0(t). VON(rms) = VLCD. Vstate2(t) = V(sn + 1)(t) − VBP0(t). VOFF(rms) = 0 V. Fig 4. Static drive mode waveforms mgl745 VSS VLCD VSS VLCD VSS VLCD VLCD −VLCD −VLCD VLCD state 1 0 V BP0 Sn Sn+1 state 2 0 V (a) Waveforms at driver. (b) Resultant waveforms at LCD segment. LCD segments state 1 (on) state 2 (off) Tframe |
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