Hi
We are working on a custom board using MSP430F5436. We make use of RTC_A module for time keeping. We use the Calendar Mode only (Counter mode not used).
We noticed that occasionally the RTC timing had been reset when our product wakes up from the Low power mode. The product has a Li-ion battery and a coin-cell battery as well. Under all conditions, there is a 3.3V power to the MSP430. So it would be safe to rule out absence of power as a cause for timing reset.
It would be helpful if we can find a way to trace the source of this reset. Are there any possible sources of reset which we can look into?
Regards,
Padmanabhan