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PCF85263ATL/A Datasheet(PDF) 60 Page - NXP Semiconductors

Part # PCF85263ATL/A
Description  Tiny RTC/Calendar with Alarm Function, Battery Switch-Over, Time Stamp Input, and I2C-bus
PDF  102 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF85263ATL/A Datasheet(HTML) 60 Page - NXP Semiconductors

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NXP Semiconductors
PCF85263A
Tiny RTC/Calendar with Alarm Function, Battery Switch-Over, Time Stamp Input, and I2C-bus
• Send CPR instruction
• The address counter rolls over to address 00h
• Set time (100th seconds, seconds to years)
• End I2C access
• Wait for an external time reference to indicate the start of time counting
• Start an I2C access at register 2Eh
• Clear STOP bit (time starts counting from now)
• End I2C access
The flow for resetting time in stop-watch mode is:
• Start an I2C access at register 2Eh
• Set the STOP bit
• Send CPR instruction
• The address counter rolls over to address 00h
• Set the time to 000000:00:00.00
• End I2C access
PCF85263A
All information provided in this document is subject to legal disclaimers.
© 2025 NXP B.V. All rights reserved.
Product data sheet
Rev. 5.4 — 12 December 2025
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