PCA2125_08 datasheet(1/36 Pages) NXP

Part #	PCA2125

Description	SPI Real-time clock/calendar

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Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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1.

General description

The PCA2125 is a CMOS real-time clock/calendar optimized for low-power consumption

and an operating temperature up to 125

°C. Data is transferred via a Serial Peripheral

Interface (SPI) bus with a maximum data rate of 6.0 Mbit/s. An alarm and timer function

are also available with the possibility to generate a wake-up signal on an interrupt pin.

AEC Q100 qualiﬁed for automotive applications.

2.

Features

I Provides year, month, day, weekday, hours, minutes and seconds based on

32.768 kHz quartz crystal

I Resolution: seconds to years

I Clock operating voltage: 1.3 V to 5.5 V

I Low backup current: typical 0.55 µA at VDD = 3.0 V and Tamb = 25 °C

I 3-line SPI-bus with separate combinable data input and output

I Serial interface (at VDD = 1.6 V to 5.5 V)

I 1 second or 1 minute interrupt output

I Freely programmable timer with interrupt capability

I Freely programmable alarm function with interrupt capability

I Integrated oscillator capacitor

I Internal power-on reset

I Open-drain interrupt pin

3.

Applications

I Automotive time keeping application

I Metering

4.

Ordering information

PCA2125

SPI Real-time clock/calendar

Rev. 01 — 28 July 2008

Product data sheet

Table 1.

Ordering information

Type number

Package

Name

Description

Version

PCA2125TS

TSSOP14

plastic thin shrink small outline package; 14 leads;

body width 4.4 mm

SOT402-1

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NXP Semiconductors	PCA2125TS	1Mb / 40P	SPI Real time clock / calendar Rev.00.11-30 January 2007

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