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PCF2123TS - NXP
Manufacturer:
NXP
ManyChip's Part#:
MC321617233
Category:
Real Time Clock IC
RoHS:
Lead free / RoHS Compliant
Datasheet:
Datasheet 3D Model
Description:
Real Time Clock Serial Clock/Calendar/Alarm/Timer/Interrupt 14Pin TSSOP
Stock Locations:
Availability:
286 pcs In Stock
MOQ:
1 pcs
Unit Price:
$ 0

Updated at 15/12/2025 10:30:15(UTC+8)

Certifications

ManyChip is committed to product quality and safety with ISO 9001, ISO 13485, ISO 45001, UL, RoHS, CQC and REACH certifications.

Description

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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PCF2123TS Specifications

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- Vacuum packaging
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