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DS3231M - I2C Real-Time Clock

General Description

The DS3231M is a low-cost, extremely accurate, I2C realtime clock (RTC).

The device incorporates a battery input and maintains accurate timekeeping when main power to the device is interrupted.

Key Features

  • Highly Accurate RTC With Integrated MEMS Resonator Completely Manages All Timekeeping Functions.
  • Complete Clock Calendar Functionality Including Seconds, Minutes, Hours, Day, Date, Month, and Year, with Leap-Year Compensation Up to Year 2100.
  • Timekeeping Accuracy ±5ppm (±0.432 Second/Day) from -45°C to +85°C.
  • Footprint and Functionally Compatible to DS3231.
  • Two Time-of-Day Alarms.
  • 1Hz and 32.768kHz Outputs.
  • Reset Output and Pushbut.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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DS3231M ±5ppm, I2C Real-Time Clock General Description The DS3231M is a low-cost, extremely accurate, I2C realtime clock (RTC). The device incorporates a battery input and maintains accurate timekeeping when main power to the device is interrupted. The integration of the microelectromechanical systems (MEMS) resonator enhances the long-term accuracy of the device and reduces the piecepart count in a manufacturing line. The DS3231M is available in the same footprint as the popular DS3231 RTC. The RTC maintains seconds, minutes, hours, day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with an AM/PM indicator.