Type Features Memory Size Time Format Date Format Interface Voltage - Supply Voltage - Supply, Battery Current - Timekeeping (Max) Operating Temperature Mounting Type Package / Case Supplier Device Package | Clock/Calendar Alarm, Leap Year, Square Wave Output, Watchdog Timer - HH:MM:SS:hh (24 hr) YY-MM-DD-dd I²C, 2-Wire Serial 2.7 V ~ 5.5 V 2 V ~ 3.5 V 100µA @ 2.7V ~ 5.5V -40°C ~ 85°C Surface Mount 18-SOX, 18-SOIC with Crystal (7.5mm Width) 18-SOX |