Fermion: DS3231M MEMS Precise RTC (Breakout, I2C)

The Fermion DS3231M is a high-precision real-time clock breakout board designed for embedded timing systems. Featuring MEMS technology and I2C communication, it is an ideal solution for students, makers, and hobbyists requiring dependable time tracking in their electronics projects.

High-accuracy MEMS resonator

The module uses an integrated MEMS resonator to achieve precise timekeeping with an accuracy rating of plus or minus 5ppm. This ensures minimal time drift across extended operating periods.

Integrated temperature compensation

Built-in temperature compensation actively adjusts for thermal fluctuations to maintain stable clock timing. This keeps timekeeping accurate even in environments with varying ambient temperatures.

Simple I2C communication

The breakout interfaces over standard I2C, allowing easy integration with microcontrollers and development boards. It requires minimal wiring to communicate time and date data.

Dual programmable alarms

The DS3231M includes dual configurable alarms for event scheduling and timed triggers. These can be used to wake microcontrollers or trigger routine automated tasks.

Dedicated battery backup support

Battery backup capability ensures continuous timekeeping during main system power outages. The clock keeps running uninterrupted so embedded systems retain the correct time upon reboot.

Downloads & documentation

• Product wiki (DFRobot)