PC85132/232-1 データシートの表示（PDF） - NXP Semiconductors.
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PC85132/232-1 Datasheet PDF : 65 Pages
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NXP Semiconductors
PCA85132
LCD driver for low multiplex rates
7.3.4.4 1:4 multiplex drive mode
When four backplanes are provided in the LCD, the 1:4 multiplex drive mode applies as
shown in Figure 11.
PCA85132
Product data sheet
BP0
BP1
BP2
BP3
Sn
Sn+1
Sn+2
Sn+3
state 1
state 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
VLCD
2VLCD/3
VLCD/3
VSS
VLCD
2VLCD/3
VLCD/3
VSS
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.
013aaa211
Fig 11.
Vstate1(t) = VSn(t) VBP0(t).
Von(RMS) = 0.577VLCD.
Vstate2(t) = VSn(t) VBP1(t).
Voff(RMS) = 0.333VLCD.
Waveforms for the 1:4 multiplex drive mode with 1⁄3 bias
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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