General Description

The DS3232M is a low-cost, extremely accurate, I2C real-time clock (RTC) with 236 bytes of battery-backed SRAM. 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 piece part count in a manufacturing line.

Features

♦ Timekeeping Accuracy ±5ppm (±0.432 Second/Day) from -40NC to +85NC

♦ 236 Bytes of Battery-Backed User SRAM

♦ Battery Backup for Continuous Timekeeping

♦ Low Power Consumption

♦ Functionally Compatible to DS3232

♦ 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 +4.5V Supply Voltage

♦ Digital Temp Sensor with ±3NC Accuracy

♦ -40NC to +85NC Temperature Range

♦ 8-Pin SO (150 mils) Package

♦ Underwriters Laboratories (UL) Recognized

Applications

  Power Meters

  Industrial Applications