Highly Accurate RTC Completely Manages All Timekeeping Functions
Simple Serial Interface Connects to Most Microcontrollers
Battery-Backup Input for Continuous Timekeeping
Operating Temperature Ranges: Commercial (0°C to +70°C) and Industrial (-40°C to +85°C)
The DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC) with an integrated temperature compensated crystal oscillator (TCXO) and crystal.The device incorporates a battery input, and maintains accurate timekeeping when main power to the device is interrupted.