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PCF8545 数据表(PDF) 25 Page - NXP Semiconductors

部件名 PCF8545
功能描述  Universal LCD driver for multiplex rates up to 1:8
PDF  72 Pages
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制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

PCF8545 数据表(HTML) 25 Page - NXP Semiconductors

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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
25 of 72
NXP Semiconductors
PCF8545
Universal LCD driver for multiplex rates up to 1:8
8.5.2 1:6 Multiplex drive mode
When six backplanes are provided in the LCD, the 1:6 multiplex drive mode applies. The
PCF8545 allows use of 1⁄3 bias or 1⁄4 bias in this mode as shown in Figure 15 and
Figure 16. These waveforms are drawn for the case of line inversion (see
Section 8.1.3.2).
Vstate1(t) = VSn(t)  VBP0(t). Vstate2(t) = VSn +1 (t)  VBP0(t). Von(RMS)(t) = 0.509VLCD. Voff(RMS)(t) = 0.333VLCD.
Fig 15. Waveforms for 1:6 multiplex drive mode with bias 1⁄3 and line inversion



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