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PCF85162 Datasheet(PDF) 10 Page - NXP Semiconductors

Part # PCF85162
Description  Universal LCD driver for low multiplex rates
PDF  46 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF85162 Datasheet(HTML) 10 Page - NXP Semiconductors

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PCF85162
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 3 — 16 June 2011
10 of 46
NXP Semiconductors
PCF85162
Universal LCD driver for low multiplex rates
7.4 LCD drive mode waveforms
7.4.1 Static drive mode
The static LCD drive mode is used when a single backplane is provided in the LCD. The
backplane (BPn) and segment (Sn) drive waveforms for this mode are shown in Figure 6.
Vstate1(t) = VSn(t)  VBP0(t).
Von(RMS) = VLCD.
Vstate2(t) = V(Sn + 1)(t)  VBP0(t).
Voff(RMS) = 0 V.
Fig 6.
Static drive mode waveforms
013aaa207
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)
Tfr



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