kinetis - Lost data internal eeprom

igor_g — Tue, 07 Mar 2017 11:58:12 GMT

Dear all,

I would like to know which could be the reason to lost data in internal eeprom (MK10DX32VLH5) .

Could be not to use a RTC or because of power loss in a critical moment?

Until now I had never had this problems but the client informed me that some devices lost data stored in eeprom.

Note: The write is very sporadic and made by the user with scada.

Igor

Re: kinetis - Lost data internal eeprom

Hui_Ma — Wed, 08 Mar 2017 07:25:59 GMT

At first, we need to avoid using the incorrect Flash module driver with incorrect Flash operation.

Customer could download MK10DX32VLH5 related Flash driver from here.

And it also need to check before FlexNVM EEPROM operation need to check FTFL_FCNFG register [EEERDY] bit is set.

If internal EEPROM operation without any problem and customer could get the correct data with the same software code.

The internal EEPROM lost data could happen when the EEPROM writes beyond the write endurance.

Customer need to check the EEPROM write frequency and if there exists above situation.

Wish it helps.

Have a great day,
Ma Hui
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kinetis - Lost data internal eeprom

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