General Description
●The DS3231M is a low-cost, extremely accurate, I2C real-time 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) resona
●tor enhances the long-term accuracy of the device and reduces the piece-part count in a manufacturing line. The DS3231M is available in the same footprint as the popular DS3231 RTC.
●Features
●• Timekeeping Accuracy Q5ppm (Q0.432 Second/Day) from -40NC to +85NC
●• Battery Backup for Continuous Timekeeping
●• Low Power Consumption
●• Footprint and Functionally Compatible to DS3231
●• Complete Clock Calendar Functionality Including Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Up to Year 2100
●• Two Time-of-Day Alarms
●• 1Hz and 32.768kHz Outputs
●• Reset Output and Pushbutton Input with Debounce
●• Fast (400kHz) I2C-Compatible Serial Bus
●• +2.3V to +5.5V Supply Voltage
●• Digital Temp Sensor with Q3NC Accuracy
●• -40°C to +85°C Temperature Range
●• 8-Pin or 16-Pin SO (300 mils) Packages
●• Underwriters Laboratories (UL) Recognized
