PCF85263ATLSLASHA datasheet(3/102 Pages) NXP

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NXP Semiconductors

PCF85263A

Tiny RTC/Calendar with Alarm Function, Battery Switch-Over, Time Stamp Input, and I2C-bus

2 Features and benefits

• UL Recognized Component (PCF85263ATL)

• Provides year, month, day, weekday, hours, minutes, seconds, and 100th seconds based on a 32.768 kHz

quartz crystal

• Stop-watch mode for elapsed time counting. From 100th seconds to 999 999 hours

• Two independent alarms

• Battery back-up circuit

• Watchdog timer

• Three timestamp registers

• Two independent interrupt generators plus predefined interrupts at every second, minute, or hour

• Frequency adjustment via programmable offset register

• Clock operating voltage: 0.9 V to 5.5 V

• Low current; typical 0.28 μA at VDD = 3.0 V and Tamb = 25 °C

• 400 kHz two-line I2C-bus interface (at VDD = 1.8 V to 5.5 V)

• Programmable clock output for peripheral devices (32.768 kHz, 16.384 kHz, 8.192 kHz, 4.096 kHz, 2.048

kHz, 1.024 kHz, and 1 Hz)

• Configurable oscillator circuit for a wide variety of quartzes: CL = 6 pF, CL = 7 pF, and CL = 12.5 pF

• Packages offered: SI8, TSSOP8, TSSOP10, HXSON10, and WLCSP12

PCF85263A

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 5.4 — 12 December 2025

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PCF85263ATL/A Datasheet(PDF) 3 Page - NXP Semiconductors