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PCF8562 Scheda tecnica(PDF) 11 Page - NXP Semiconductors

Il numero della parte PCF8562
Spiegazioni elettronici  Universal LCD driver for low multiplex rates
PDF  44 Pages
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Produttore elettronici  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

PCF8562 Scheda tecnica(HTML) 11 Page - NXP Semiconductors

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PCF8562
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 6 — 16 June 2011
11 of 43
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 (Sn) drive waveforms for this mode are shown in Figure 6.
Vstate1(t) = VSn(t)  VBP0(t).
Von(RMS) = VLCD.
Vstate2(t) = V(Sn + 1)(t)  VBP0(t).
Voff(RMS) = 0 V.
Fig 6.
Static drive mode waveforms
013aaa207
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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