Microchip MCP79412-I/MS, Real Time Clock (RTC) Serial-I2C, 8-Pin MSOP

The MCP79412 general purpose I2C™Compatible real-time clock/calendar (RTCC) is highly integrated with nonvolatile memory and advanced features normally found in higher priced devices. These features include a battery switchover circuit for backup power, a time stamp to log power failures and digital trimming for accuracy.

Hours, Minutes, Seconds, Day of Week, Day, Month, Year
Leap year compensated to 2399
12/24 hour modes
1 PPM Resolution
±129 PPM Range
Dual Programmable Alarms
Timekeeping
Battery-Backed Real-Time Clock/Calendar (RTCC)
Hours, Minutes, Seconds, Day of Week, Day, Month, Year
Leap year compensated to 2399
12/24 hour modes
On-Chip Digital Trimming/Calibration
1 PPM Resolution
±129 PPM Range
Dual Programmable Alarms
Versatile Output Pin
Clock output with selectable frequency
Alarm output
General Purpose output
Power-Fail Time-Stamp