PCA85232DA NXP [NXP Semiconductors], PCA85232DA Datasheet - Page 12
PCA85232DA
Manufacturer Part Number
PCA85232DA
Description
LCD driver for low multiplex rates
Manufacturer
NXP [NXP Semiconductors]
Datasheet
1.PCA85232DA.pdf
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NXP Semiconductors
PCA85232
Product data sheet
7.4.2 1:2 multiplex drive mode
When two backplanes are provided in the LCD, the 1:2 multiplex mode applies. The
PCA85232 allows the use of
Figure
Fig 7.
8.
V
V
V
V
Waveforms for the 1:2 multiplex drive mode with
state1
on(RMS)
state2
off(RMS)
state 1
state 2
Sn+1
(t) = V
(t) = V
BP0
BP1
All information provided in this document is subject to legal disclaimers.
Sn
= 0.791V
= 0.354V
Sn
Sn
(t) − V
(t) − V
Rev. 1 — 8 December 2010
V
V
V
V
V
V
V
V
V
V
V
V
− V
− V
V
V
− V
− V
0 V
0 V
LCD
LCD
SS
LCD
LCD
SS
LCD
SS
LCD
SS
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
BP0
BP1
/2
/2
/2
/2
.
.
/2
/2
(t).
(t).
1
⁄
2
bias or
1
⁄
3
(a) Waveforms at driver.
(b) Resultant waveforms
bias in this mode as shown in
at LCD segment.
T
fr
LCD driver for low multiplex rates
1
⁄
2
bias
013aaa208
state 1
state 2
LCD segments
PCA85232
© NXP B.V. 2010. All rights reserved.
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