So after looking at the RTC on the (K64 Sub-Family Reference Manual). I find that RTC doesn't have time and date,
instead there is a 32-bit seconds counter with roll-over protection. The RTC has a 1sec ISR, that I believe that it is
always going after it has been activated in software. I some questions:
1. What is "with roll-over protection"?
2. Is it possible to write to the 32-bit second counter register?
3. When a power down situation occurs is there a flag that is set to detect it?
4. When power is restore is there a flag that is set to detect it?