| 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, SRAM, Watchdog Timer 7B HH:MM:SS:hh (24 hr) YY-MM-DD-dd SPI 2.7 V ~ 5.5 V 1.8 V ~ 5.5 V 10µA @ 5.5V -40°C ~ 85°C Surface Mount 16-VQFN Exposed Pad 16-QFN (4x4) |