Features
 Very low power consumption: 240 nA @ 3V
 Time accuracy: ±3 ppm @ -40°C to 85°C
 External Event Input with Interrupt and Time Stamp function
 Wide operating voltage range: 1.5V to 5.5V
 Integrated CMOS Oscillator with 32.768kHz crystal resonator
 Factory calibrated temperature compensation
 Internal Power-On Reset (POR)
 Alarm Interrupts for second, minutes, hour, date and weekday
 Automatic leap year calculation (2000 to 2099)
 Clock output: 32.768 kHz, 1.024 Hz, and 1 Hz
 I2C-bus interface: 400 kHz
 REACH/RoHS II Compliant | MSL Level 1