Parts Clocks & Timing Real-Time Clocks DS3231SN#

DS3231SN#

Name: DS3231SN#
Brand: Analog Devices / Maxim Integrated

Analog Devices / Maxim Integrated

Real Time Clock Extremely Accurate I C-Integrated RTC/TC

NRND6,333 in stock

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Overview

The DS3231SN# is an extremely accurate, I2C-integrated Real-Time Clock (RTC) with a temperature-compensated crystal oscillator (TCXO) and crystal. It maintains high precision by accounting for temperature variations that typically cause crystal drift, ensuring reliable timekeeping across the industrial temperature range of -40C to +85C.

Why Choose This Part

This RTC eliminates the need for external tuning capacitors or crystals, simplifying PCB layout and reducing BOM count. The integrated TCXO maintains accuracy within 2ppm, while the built-in battery-backup input and low standby current of 110uA ensure continuous timekeeping during primary power loss.

Applications

Utility Power Meters

Ensures precise time-stamping for multi-tariff billing even in outdoor environments with extreme temperature fluctuations.

GPS Systems

Provides a highly stable reference clock to assist with rapid satellite acquisition and time-to-first-fix.

Telematics and Data Loggers

Maintains accurate event logs for fleet management or remote environmental monitoring where maintenance access is limited.

Server Timekeeping

Acts as a reliable hardware clock source to maintain system time during power cycles or network outages.

Getting Started

The device communicates via a standard I2C interface and operates on a supply voltage between 2.3V and 5.5V. To begin development, connect the SDA and SCL lines with appropriate pull-up resistors and utilize the integrated 32.768kHz square-wave output for system synchronization.

Also Consider

DS3231M Analog Devices / Maxim Integrated - Uses a MEMS resonator instead of a crystal for improved vibration and shock resistance in high-reliability industrial settings.

DS1307 Analog Devices / Maxim Integrated - A lower-cost RTC for applications where extreme temperature compensation and high precision are not required.