PCF8533 データシートの表示（PDF） - Philips Electronics
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PCF8533 Datasheet PDF : 36 Pages
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Philips Semiconductors
Universal LCD driver for low multiplex rates
Product specification
PCF8533
handbook, full pagewidth
BP0
BP1
BP2
BP3
Sn
Sn + 1
Sn + 2
Sn + 3
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
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
Vstate1(t) = Vsn(t) − VBP0(t): Von(rms) = 0.577VLCD.
Vstate2(t) = Vsn(t) − VBP1(t): Voff(rms) = 0.333VLCD.
Tframe
(a) Waveforms at driver.
(b) Resultant waveforms
at LCD segment.
LCD segments
state 1
state 2
MGL749
Fig.7 Waveforms for the 1 : 4 multiplex drive mode.
1999 Jul 30
12
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