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PCA85232 Datasheet(PDF) 13 Page - NXP Semiconductors

No. de pieza PCA85232
Descripción Electrónicos  LCD driver for low multiplex rates
PDF  54 Pages
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Fabricante Electrónico  NXP [NXP Semiconductors]
Página de inicio  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCA85232 Datasheet(HTML) 13 Page - NXP Semiconductors

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PCA85232
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 1 — 8 December 2010
13 of 54
NXP Semiconductors
PCA85232
LCD driver for low multiplex rates
Vstate1(t) = VSn(t) − VBP0(t).
Von(RMS) = 0.745VLCD.
Vstate2(t) = VSn(t) − VBP1(t).
Voff(RMS) = 0.333VLCD.
Fig 8.
Waveforms for the 1:2 multiplex drive mode with 1
⁄
3 bias
013aaa209
state 1
BP0
(a) Waveforms at driver.
(b) Resultant waveforms
at LCD segment.
LCD segments
state 2
BP1
state 1
state 2
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
−VLCD
0 V
VLCD
2VLCD/3
−2VLCD/3
VLCD/3
−VLCD/3
S
n
S
n+1
Tfr
VSS
VLCD
2VLCD/3
VLCD/3



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