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PCA9620 датащи(PDF) 25 Page - NXP Semiconductors

номер детали PCA9620
подробное описание детали  Universal LCD driver for low multiplex rates
PDF  71 Pages
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производитель  NXP [NXP Semiconductors]
домашняя страница  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCA9620 датащи(HTML) 25 Page - NXP Semiconductors

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PCA9620
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 1 — 9 December 2010
25 of 71
NXP Semiconductors
PCA9620
Universal LCD driver for low multiplex rates
Vstate1(t) = VSn(t) − VBP0(t).
Vstate2(t) = VSn(t) − VBP1(t).
Von(RMS)(t) = 0.745VLCD. Voff(RMS)(t) = 0.333VLCD.
Fig 17. Waveforms for the 1:2 multiplex drive mode with 1
3 bias (line inversion mode)
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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