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