PCF85263ATSLASHA datasheet(1/100 Pages) NXP

Part #	PCF85263AT/A

Description	Tiny Real-Time Clock/calendar with alarm function, battery switch-over, time stamp input, and I2C-bus

PDF	100 Pages

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Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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1 / 100 page

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 battery switch-over as well as input driven events. Featuring clock output

and two independent interrupt signals, two alarms, I2C interface and quartz crystal

calibration.

For a selection of NXP Real-Time Clocks, see Table 72 on page 90

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 999999 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

Aat V

DD = 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 =6pF, CL = 7 pF, and

CL = 12.5 pF

3.

Applications

 Printers and copiers

 Electronic metering

 Digital cameras

PCF85263A

Tiny Real-Time Clock/calendar with alarm function, battery

switch-over, time stamp input, and I2C-bus

Rev. 4.1 — 27 November 2015

Product data sheet

1.

The definition of the abbreviations and acronyms used in this data sheet can be found in Section 24.

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PCF85263AT/A Datasheet(PDF) 1 Page - NXP Semiconductors

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