•Built-in 32.768 kHz crystal unit
: Frequency adjusted for high accuracy. (± 5 ×10−6 / Ta = +25 °C)
•Interface Type : I2C-Bus Interface (400kHz .
•Operating voltage range : 2.4 V to 5.5 V •Wide voltage for Timekeeping. : 1.0 V to 5.5 V
•Low backup current : 350 nA (SA) 400 nA (LC) / 3 V (Typ.)
•Event detection and Time stamp : One-shot full timestamp and interrupt.
•Dual event detection ports : Each terminal has a de-bounce circuit.
•Auto power switching functions : It switches VDD and VBAT, automatically.
•Dual Alarm, Periodic interruption