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PCF8576DT/2 Arkusz danych(PDF) 11 Page - NXP Semiconductors

Numer części PCF8576DT/2
Szczegółowy opis  Universal LCD driver for low multiplex rates
PDF  52 Pages
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Producent  NXP [NXP Semiconductors]
Strona internetowa  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF8576DT/2 Arkusz danych(HTML) 11 Page - NXP Semiconductors

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PCF8576D_7
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 7 — 18 December 2008
11 of 52
NXP Semiconductors
PCF8576D
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 6.
(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 6.
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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