PCU9654 datasheet, PDF - EEWORLD Datasheet

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PCU9654: DescriptionReal time clock/calender; File Size180KB，36 Pages; ManufacturerNXP; Websitehttps://www.nxp.com

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Real time clock/calender

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PCA2125

SPI Real-time clock/calendar

Rev. 01 — 28 July 2008

Product data sheet

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

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

32.768 kHz quartz crystal

Resolution: seconds to years

Clock operating voltage: 1.3 V to 5.5 V

Low backup current: typical 0.55

µA

at V

= 3.0 V and T

amb

= 25

°C

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

Serial interface (at V

= 1.6 V 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

3. Applications

Automotive time keeping application

Metering

4. Ordering information

Table 1.

Ordering information

Package

Name

PCA2125TS

TSSOP14

Description

plastic thin shrink small outline package; 14 leads;

body width 4.4 mm

Version

SOT402-1

Type number

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