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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PCF8534A датащи(PDF) 13 Page - NXP Semiconductors |
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PCF8534A датащи(HTML) 13 Page - NXP Semiconductors |
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13 / 41 page  PCF8534A_0 © NXP B.V. 2008. All rights reserved. Product data sheet Rev. 00.90 — 4 February 2008 13 of 41 NXP Semiconductors PCF8534A Universal LCD driver for low multiplex rates 7.4.3 1:3 Multiplex drive mode When three backplanes are provided in the LCD, the 1:3 multiplex drive mode applies, as shown in Figure 8. Vstate1(t) = Vsn(t) − VBP0(t). VON(rms) = 0.638 VLCD. Vstate2(t) = V(sn)(t) − VBP1(t). VOFF(rms) = 0.333 VLCD. Fig 8. Waveforms for the 1:3 multiplex drive mode mgl748 state 1 BP0 (b) Resultant waveforms at LCD segment. LCD segments state 2 BP1 state 1 state 2 (a) Waveforms at driver. BP2 Sn Sn+1 Sn+2 Tframe VSS VLCD 2VLCD/3 VLCD/3 VSS VLCD 2VLCD/3 VLCD/3 VSS VLCD 2VLCD/3 VLCD/3 VSS VLCD 2VLCD/3 VLCD/3 VSS VLCD 2VLCD/3 VLCD/3 0 V VLCD 2VLCD/3 −2VLCD/3 VLCD/3 −VLCD/3 −VLCD 0 V VLCD 2VLCD/3 −2VLCD/3 VLCD/3 −VLCD/3 −VLCD VSS VLCD 2VLCD/3 VLCD/3 |
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