DS3231 RTC Module Precise Real Time Clock I2C AT24C32

Description
DS3231 high precision clock module is a low cost, high precision I2C real time clock (RTC) with integrated temperature compensated crystal oscillator (TCXO) and crystal. The device includes a battery input that maintains accurate timing when the mains supply is disconnected. The integrated crystal oscillator increases the long-term accuracy of the device and reduces the number of components in the production line.

The integration of the crystal resonator enhances the long-term accuracy of the device as well as reduces the piece-part count in a manufacturing line. The ds3231 Arduino is available in commercial and industrial temperature ranges and is offered in a 16-pin, 300-mil SO package.

Features:

DS3231 RTC with 2032 Battery Holder.
Programmable Square-Wave Output Signal.
Digital Temp Sensor Output.
Register for Aging Trim.
Two Time-of-Day Alarms.
Low Power Operation Extends Battery-Backup Run Time.
Highly Accurate RTC Completely Manages All Timekeeping Functions.
Configurable I2C device Address for AT24C32 using SMD jumpers on PCB (A0, A1, A2).
Battery-Backup Input for Continuous Timekeeping.

Datasheet available here.