| RTC Counts Seconds, Minutes, Hours, Day, Date,Month, and Year with Leap-Year Compensation Valid Up to 2100 Two Programmable Alarms Programmable Square-Wave Output Operates from a 32.768kHz, 8.192kHz, 60Hz, or 50Hz Digital Clock Signal 16 Bytes of SRAM Fast (400kHz) 2-Wire Interface 1.7V to 5.5V Operation |