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Hi,
My customer who is evaluating MSP430FR5969 has a question for RTC and wakeup from LPM3.5.
Customer found the RTC calendar delays ~5second after wakeup from LPM3.5.
If sleep and wakeup cycle is repeated, the delay are added.
Customer found that they did RTC restore ~5second after wakeup from LPM3.5.
Then they changed to restore RTC just after wakeup from LPM3.5, and now the RTC delay does not happen.
Is this expected behavior? Why such delay is added?
Thanks and regards,
Koichiro Tashiro
Hi Koichiro,
The PMM module is disabled in LPM3.5 mode, so the RTC configuration will be a little different.
Please refer to the following materials to see if it can solve the problem.
And you also can get more deep information in User's Guide (RTC_B section):
http://www.ti.com/lit/ug/slau367o/slau367o.pdf
Best Regards
Johnson
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