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RTC does not advance time counter

Question asked by Mark Scovel on Mar 17, 2018
Latest reply on Jun 13, 2018 by Denis Collis

The RTC Time Seconds Register (TSR) and Timer Prescaler Register (TPR) do not increment while the K65 is running/single stepping (nor powered off with a battery connected).

The tower does not have this problem. Both TSR and TPR run (constantly increment) and when powered off/on the TSR is updated to reflect the elapsed time.

Furthermore, the KSDK example rtc_example_twrk65f180m sets an RTC alarm and waits for it to happen. This works on the tower and not on our board. 

I'm thinking there is some K65 errata that Freescale/NXP don't know about yet.

Could this be related to MCG clock speed?

Has anybody seen this problem or does anyone have any idea how to fix it?