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PCF8562 датащи(PDF) 13 Page - NXP Semiconductors

номер детали PCF8562
подробное описание детали  Universal LCD driver for low multiplex rates
PDF  36 Pages
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производитель  PHILIPS [NXP Semiconductors]
домашняя страница  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

PCF8562 датащи(HTML) 13 Page - NXP Semiconductors

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November 22, 2004
13
Philips Semiconductors
Preliminary specification
Universal LCD driver
for low multiplex rates
PCF8562
6.4.3
1 : 3 MULTIPLEX DRIVE MODE
When three backplanes are provided in the LCD, the 1 : 3 multiplex drive mode applies (see Fig.8).
Fig.8 Waveforms for the 1 : 3 multiplex drive mode.
V
state1 t
()
V
S
n
t
()
V
BP0 t
()
=
V
on(rms)
0²638V
LCD
=
V
state2 t
()
V
S
n
t
()
V
BP1 t
()
=
V
off(rms)
0.333V
LCD
=
handbook, full pagewidth
MGL748
state 1
BP0
(b) Resultant waveforms
at LCD segment.
LCD segments
state 2
BP1
state 1
state 2
(a) Waveforms at driver.
BP2
Sn
Sn + 1
Sn + 2
Tframe
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
0 V
VLCD
2VLCD/3
−2VLCD/3
VLCD/3
−VLCD/3
−VLCD
0 V
VLCD
2VLCD/3
−2VLCD/3
VLCD/3
−VLCD/3
−VLCD
VSS
VLCD
2VLCD/3
VLCD/3



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