PCF85263ATLSLASHA datasheet(2/102 Pages) NXP

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

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NXP Semiconductors

PCF85263A

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

1 General description

The PCF85263A is a CMOS1 Real-Time Clock (RTC) and calendar optimized for low power consumption

and with automatic switching to battery on main power loss. The RTC can also be configured as a stop-watch

(elapsed time counter). Three time log registers triggered from the battery switch-over and input-driven events.

Featuring clock output and two independent interrupt signals, two alarms, I2C-bus interface and quartz crystal

calibration.

For a selection of NXP Real-Time Clocks, see Table 73.

The definition of the abbreviations and acronyms used in this data sheet can be found in Section 22.

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) 2 Page - NXP Semiconductors