PCA85132 Просмотр технического описания (PDF) - NXP Semiconductors.
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PCA85132 Datasheet PDF : 65 Pages
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NXP Semiconductors
PCA85132
LCD driver for low multiplex rates
7.3.4.3 1:3 multiplex drive mode
When three backplanes are provided in the LCD, the 1:3 multiplex drive mode applies as
shown in Figure 10.
BP0
BP1
BP2
Sn
Sn+1
Sn+2
VLCD
2VLCD/3
VLCD/3
VSS
VLCD
2VLCD/3
VLCD/3
VSS
VLCD
2VLCD/3
VLCD/3
VSS
VLCD
2VLCD/3
VLCD/3
VSS
VLCD
2VLCD/3
VLCD/3
VSS
VLCD
2VLCD/3
VLCD/3
VSS
state 1
state 2
VLCD
2VLCD/3
VLCD/3
0V
−VLCD/3
−2VLCD/3
−VLCD
VLCD
2VLCD/3
VLCD/3
0V
−VLCD/3
−2VLCD/3
−VLCD
Tfr
LCD segments
state 1
state 2
(a) Waveforms at driver.
(b) Resultant waveforms
at LCD segment.
013aaa210
Fig 10.
Vstate1(t) = VSn(t) VBP0(t).
Von(RMS) = 0.638VLCD.
Vstate2(t) = VSn(t) VBP1(t).
Voff(RMS) = 0.333VLCD.
Waveforms for the 1:3 multiplex drive mode with 1⁄3 bias
PCA85132
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 9 April 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
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