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PCF8545ATT 데이터시트(PDF) 30 Page - NXP Semiconductors

부품명 PCF8545ATT
상세설명  Universal 36 횞 4 LCD segment driver
PDF  51 Pages
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제조업체  NXP [NXP Semiconductors]
홈페이지  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF8545ATT 데이터시트(HTML) 30 Page - NXP Semiconductors

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NXP Semiconductors
PCF8551
Universal 36 × 4 LCD segment driver
• CE set HIGH
aaa-011954
display data
display data
AP[4:0]
R/W default
SCL
SDIO
CE
b7
1
b6
0
b5
0
b4
0
b3
0
b2
1
b1
0
b0
0
b7
1
b6
1
b5
1
b4
0
b3
0
b2
0
b1
0
b0
0
b7
0
b6
0
b5
1
b4
1
b3
0
b2
0
b1
0
b0
0
Data transfers are terminated by de-asserting CE (set CE to logic 1).
Figure 21. SPI-bus read example: reading two data bytes from registers 04h and 05h
10.3 EMC detection
The PCF8551 is ruggedized against EMC susceptibility; however it is not possible to
cover all cases. To detect if a severe EMC event has occurred, it is possible to check the
responsiveness of the device by reading its registers.
11 Internal circuitry
VSS
SCL, SDA/CE
VDD
PORE, SDIO, CLK
VSS
VSS
VLCD
COM0 to
COM3
SEG0 to
SEG35
aaa-013225
Figure 22. Device protection diagram
12 Safety notes
CAUTION
This device is sensitive to ElectroStatic Discharge (ESD). Observe
precautions for handling electrostatic sensitive devices.
Such precautions are described in the ANSI/ESD S20.20, IEC/ST 61340-5,
JESD625-A or equivalent standards.
PCF8551
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2021. All rights reserved.
Product data sheet
Rev. 3.1 — 3 May 2021
30 / 51



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