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PCF8566P Fiches technique(PDF) 10 Page - NXP Semiconductors

No de pièce PCF8566P
Description  Universal LCD driver for low multiplex rates
PDF  48 Pages
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Fabricant  NXP [NXP Semiconductors]
Site Internet  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF8566P Fiches technique(HTML) 10 Page - NXP Semiconductors

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PCF8566_7
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 07 — 25 February 2009
10 of 48
NXP Semiconductors
PCF8566
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.
Backplane and segment drive waveforms for this mode are shown in Figure 5.
Vstate1(t) = VSn(t) − VBP0(t).
Von(RMS) = VLCD.
Vstate2(t) = VSn+1(t) − VBP0(t).
Voff(RMS) = 0 V.
Fig 5.
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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