DS3231M Datasheet PDF - Maxim Integrated

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