| Keeps track of hundredths of seconds, seconds, minutes, hours, days, date of the month, months, and years; valid leap year compensation up to 2100 Watchdog timer restarts an out-of-control processor Alarm function schedules real time-related activities Embedded lithium energy cell maintains time, watchdog, user RAM, and alarm information Programmable interrupts and square wave outputs maintain 28-pin JEDEC footprint All registers are individually addressable via the address and data bus Accuracy is better than ±1 minute/month at 25°C Greater than 10 years of timekeeping in the absence of VCC50 bytes of user NV RAM |