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RTC on Mx51 BBG randomly resets to 1-1-1970 - is it the PMIC?  Is there a Fix or Work-around?

Question asked by MIKE PETERSEN on Jan 24, 2014
Latest reply on Aug 7, 2014 by Daiane Angolini
Branched to a new discussion

HELP!!  

 

On our variant of the i.Mx51 BBG and on the EVK the date & time (RTC) is randomly reset back to 1-1-1970.  Sometimes only the time is reset/changed - other times the time & date are reset.  This is obviously a critical issue when interacting with the outside world.  The EVK and our design uses the MC13892 PMIC.

 

I understand there may be irrecoverable PMIC RTC issues that result in RTC reset.  If this is true or not, Please confirm.  And provide any Work-arounds which may be employed.

 

Thank all,

mike

 

PS I have seen some MX53 and WinCE tweaks - but so far none applicable to this platform.

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