PCA2125TS datasheet(1/40 Pages) NXP

Part #	PCA2125TS

Description	SPI Real time clock / calendar

PDF	40 Pages

Scroll/Zoom	100%

Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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1.

Product profile

1.1 General description

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

and 125

°C operation. Data is transferred serially via an SPI bus with a maximum data

rate of 8.0 Mbits/s. An alarm and timer function are also available with possibility to

generate a wake-up signal on an interrupt pin.

1.2 Features

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

32.768 kHz quartz crystal

Resolution: seconds - years

Clock operating voltage: 1.2 to 5.5 V

Low backup current; typical 0.55

μAat VDD = 3.0 V and Tamb =25 °C

3 line SPI with separate combinable data input and output

Serial interface (at VDD =1.8 to 5.5 V)

1 second or 1 minute interrupt output

Freely programmable timer with interrupt capability

Freely programmable alarm function with interrupt capability

Integrated oscillator capacitor

Internal power-on reset

Open-drain interrupt pin

1.3 Applications

Automotive time keeping application

Metering

1.4 Quick reference data

PCA2125

SPI Real time clock / calendar

Rev. 00.11 — 30 January 2007

Preliminary data sheet

Table 1.

Quick reference data

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VDD

supply voltage

SPI bus inactive; Tamb =25

°C1.2

-

5.5

V

SPI bus active; Tamb =

−40 to +125 °C1.6

-

5.5

V

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PCA2125TS Datasheet(PDF) 1 Page - NXP Semiconductors

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