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PCF2123 Datasheet PDF

Part Series:PCF2123 Series
Category:Real Time Clocks
Description:Real Time Clock Serial Clock/Calendar/Alarm/Timer/Interrupt 14Pin TSSOP T/R
Document:PCF2123TS/1,112 Datasheet PDF (78 Pages)

PCF2123 Datasheet PDF Real Time Clocks

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PCF2123TS/1,118 - NXP Specifications

TYPE
DESCRIPTION
Mounting Style
Surface Mount
Number of Pins
14 Pin
Case/Package
TSSOP-14
Number of Positions
14 Position
Power Dissipation
300 mW
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PCF2123TS/1,118 - NXP Function Overview

Overview
The PCF2123 is a CMOS Real-Time Clock (RTC) and calendar optimized for low power applications. Data is transferred serially via a Serial Peripheral Interface (SPI-bus) with a maximum data rate of 6.25 Mbit/s. An alarm and timer function is also available providing the possibility to generate a wake-up signal on an interrupt pin. An offset register allows fine tuning of the clock.
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## Features
Real time clock provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal
Low backup current while running: typical 100 nA at VDD = 2.0 V and Tamb = 25 ℃
Resolution: seconds to years
Watchdog functionality
Freely programmable timer and alarm with interrupt capability
Clock operating voltage: 1.1 V to 5.5 V
3 line SPI-bus with separate, but combinable data input and output
Serial interface at VDD = 1.8 V to 5.5 V
1 second or 1 minute interrupt output
Integrated oscillator load capacitors for CL = 7 pF
Internal Power-On Reset (POR)
Open-drain interrupt and clock output pins
Programmable offset register for frequency adjustment
## Target Applications
Time keeping application
Battery powered devices
Metering
High duration timers
Daily alarms
Low standby power applications
## Features
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