Bit new to the MSP430 - I have the new FR5969 launchpad and was playing with RTC_B.
Ideally, I'd like to protect the RTC over a main power failure, i.e. keep it ticking but stop the rest of the processor (think clock that doesn't lose track during a power outage).
Is there a way to do this without an external RTC (e.g. DS3231 etc.)? Some other MSP430s have a "VBAT" pin that helps in this, but not the FR5969...
Thanks
Nick