The Renesas Electronics is real time clock low power RTC with battery-backed SRAM and embedded temp comp ±5ppm with auto day light saving. The oscillator uses an external, low-cost 32.768kHz crystal. the real time clock tracks time with separate register for hours, minutes and seconds and it also have device calendar register for date, month, year and day of the week.

Real Time Clock/Calendar
Temperature Range -40°C to +85°C
10-bit digital temperature Sensor Output
±2°C accuracy
15 selectable frequency output
1 Alarm
Single event or pulse interrupt mode
Automatic backup to battery or super capacitor