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PCF8533 Datasheet(PDF) 10 Page - NXP Semiconductors

Part # PCF8533
Description  Universal LCD driver for low multiplex rates
PDF  36 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

PCF8533 Datasheet(HTML) 10 Page - NXP Semiconductors

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1999 Jul 30
10
Philips Semiconductors
Product specification
Universal LCD driver for low multiplex rates
PCF8533
Fig.5 Waveforms for the 1 : 2 multiplex drive mode with 1
⁄3bias.
Vstate1(t)=Vsn(t) − VBP0(t).
Von(rms) = 0.745VLCD.
Vstate2(t)=Vsn(t) − VBP1(t).
Voff(rms) = 0.333VLCD.
handbook, full pagewidth
MGL747
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
0 V
VLCD
2VLCD/3
−2VLCD/3
VLCD/3
−VLCD/3
−VLCD
Sn
Sn + 1
Tframe
VSS
VLCD
2VLCD/3
VLCD/3
6.4.3
1 : 3 MULTIPLEX DRIVE MODE
When three backplanes are provided in the LCD, the 1 : 3 multiplex drive mode applies, as shown in Fig.6.



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