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PCA9620 데이터시트(PDF) 28 Page - NXP Semiconductors

부품명 PCA9620
상세설명  Universal LCD driver for low multiplex rates
PDF  71 Pages
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제조업체  NXP [NXP Semiconductors]
홈페이지  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCA9620 데이터시트(HTML) 28 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
28 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) = 0.467VLCD. Voff(RMS)(t) = 0.306VLCD.
Fig 20. Waveforms for 1:6 multiplex drive mode with 1
⁄
4 bias (line inversion mode)
001aal400
Tfr
state 1
state 2
LCD segments
VLCD
3VLCD / 4
VLCD / 4
VSS
BP0
VLCD
3VLCD / 4
VLCD / 4
VSS
BP1
VLCD
3VLCD / 4
VLCD / 4
VSS
BP2
VLCD
3VLCD / 4
VLCD / 4
VSS
BP3
VLCD
3VLCD / 4
VLCD / 4
VSS
BP4
VLCD
3VLCD / 4
VLCD / 4
VSS
BP5
VLCD
−VLCD
3VLCD / 4
−3VLCD / 4
VLCD / 4
−VLCD / 4
VLCD / 2
−VLCD / 2
VSS
VLCD
VLCD / 2
VSS
VLCD
VLCD / 2
VSS
state 2
VLCD
−VLCD
3VLCD / 4
−3VLCD / 4
VLCD / 4
−VLCD / 4
VSS
state 1
Sn + 1
Sn



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