PCF85263ATLSLASHAX datasheet(8/100 Pages) NXP

Part #	PCF85263ATL/AX

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

PDF	100 Pages

Scroll/Zoom	100%

Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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8 / 100 page

PCF85263A

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Product data sheet

Rev. 4.1 — 27 November 2015

8 of 100

NXP Semiconductors

PCF85263A

Tiny RTC with alarm, battery switch-over, and I2C-bus

The 100th seconds, seconds, minutes, hours, days, months, and years as well as the

corresponding alarm registers are all coded in Binary Coded Decimal (BCD) format. When

one of the RTC registers is read, the contents of all time counters are frozen. Therefore,

faulty reading of the clock and calendar during a carry condition is prevented.

8.1 Registers organization overview

8.1.1 Time mode registers

The PCF85263A has two time mode register sets, one for the real-time clock mode and

one for the stopwatch clock mode. The access to these registers can be switched by the

RTCM bit in the Function control register (28h), see Table 7 on page 13 and Table 54 on

page 55.

Fig 8.

Time mode register set selection

PCF85263ATL/AX Datasheet(PDF) 8 Page - NXP Semiconductors