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PCF8545ATT Datasheet(PDF) 21 Page - NXP Semiconductors

Part # PCF8545ATT
Description  Automotive 18 횞 4 LCD segment driver
PDF  50 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF8545ATT Datasheet(HTML) 21 Page - NXP Semiconductors

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NXP Semiconductors
PCA8561
Automotive 18 × 4 LCD segment driver
aaa-011871
state 1
COM0
(b) Resultant waveforms
at LCD segment.
LCD segments
state 2
COM1
state 1
state 2
COM2
(a) Waveforms at driver.
COM3
SEGn
SEGn+1
SEGn+2
SEGn+3
Tfr
VSS
VLCD
2VLCD/3
VLCD/3
VSS
VLCD
2VLCD/3
VLCD/3
VSS
VLCD
2VLCD/3
VLCD/3
VSS
VLCD
2VLCD/3
VLCD/3
VSS
VLCD
2VLCD/3
VLCD/3
VSS
VLCD
2VLCD/3
VLCD/3
VSS
VLCD
2VLCD/3
VLCD/3
0 V
VLCD
2VLCD/3
-2V LCD/3
VLCD/3
- VLCD/3
- VLCD
0 V
VLCD
2VLCD/3
-2V LCD/3
VLCD/3
- VLCD/3
- VLCD
VSS
VLCD
2VLCD/3
VLCD/3
Vstate1(t) = VSEGn(t) - VCOM0(t).
Von(RMS) = 0.577VLCD.
Vstate2(t) = VSEGn(t) - VCOM1(t).
Voff(RMS) = 0.333VLCD.
Figure 16. Waveforms for the 1:4 multiplex drive mode with 1⁄3 bias
8.3 Backplane and segment outputs
PCA8561
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2021. All rights reserved.
Product data sheet
Rev. 5 — 15 March 2021
21 / 50



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