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PCF8553DTT/A Datasheet(PDF) 18 Page - NXP Semiconductors

No. de pieza PCF8553DTT/A
Descripción Electrónicos  40 횞 4 LCD segment driver
PDF  51 Pages
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Fabricante Electrónico  NXP [NXP Semiconductors]
Página de inicio  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF8553DTT/A Datasheet(HTML) 18 Page - NXP Semiconductors

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NXP Semiconductors
PCF8553
40 × 4 LCD segment driver
aaa-011867
VSS
VLCD
VSS
VLCD
VSS
VLCD
VLCD
- VLCD
- VLCD
VLCD
state 1
0 V
COM0
SEGn
SEGn+1
state 2
0 V
(a) Waveforms at driver.
(b) Resultant waveforms
at LCD segment.
LCD segments
state 1
(on)
state 2
(off)
Tfr
Vstate1(t) = VSEGn(t) - VCOM0(t).
Von(RMS) = VLCD.
Vstate2(t) = V(SEGn + 1)(t) - VCOM0(t).
Voff(RMS) = 0 V.
Figure 10. Static drive mode waveforms
8.2.2.2 1:2 Multiplex drive mode
When two backplanes are provided in the LCD, the 1:2 multiplex mode applies. The
PCF8553 allows the use of 1⁄2 bias or 1⁄3 bias in this mode as shown in Figure 11 and
Figure 12.
PCF8553
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2021. All rights reserved.
Product data sheet
Rev. 4 — 20 April 2021
18 / 51



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