Jenis: Clock/Calendar, ciri-ciri: Alarm, Leap Year, Watchdog Timer, Format masa: HH:MM:SS (24 hr), Format tarikh: YY-MM-DD-dd, Antara muka: Parallel,
Jenis: Clock/Calendar, ciri-ciri: Alarm, Leap Year, NVSRAM, Square Wave Output, Supervisor, Watchdog Timer, Saiz Ingatan: 128B, Format masa: HH:MM:SS:hh (24 hr), Format tarikh: YY-MM-DD-dd, Antara muka: I²C, 2-Wire Serial,
