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PCF8562TT/2 датащи(PDF) 9 Page - NXP Semiconductors

номер детали PCF8562TT/2
подробное описание детали  Universal LCD driver for low multiplex rates
PDF  36 Pages
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производитель  NXP [NXP Semiconductors]
домашняя страница  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF8562TT/2 датащи(HTML) 9 Page - NXP Semiconductors

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PCF8562_4
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 04 — 18 March 2009
9 of 36
NXP Semiconductors
PCF8562
Universal LCD driver for low multiplex rates
7.4 LCD drive mode waveforms
7.4.1 Static drive mode
The static LCD drive mode is used when a single backplane is provided in the LCD. The
backplane (BPn) and segment drive (Sn) waveforms for this mode are shown in Figure 4.
(1) Vstate1(t) = VSn(t) − VBP0(t).
(2) Von(RMS) = VLCD.
(3) Vstate2(t) = VSn+1(t) − VBP0(t).
(4) Voff(RMS) = 0 V.
Fig 4.
Static drive mode waveforms
mgl745
VSS
VLCD
VSS
VLCD
VSS
VLCD
VLCD
−VLCD
−VLCD
VLCD
state 1
0 V
BP0
Sn
Sn+1
state 2
0 V
(a) Waveforms at driver.
(b) Resultant waveforms
at LCD segment.
LCD segments
state 1
(on)
state 2
(off)
Tfr



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