MSP430FR5969: Flash Data Lost after 2~3 hours programmed

Part Number: MSP430FR5969

Tool/software:

Hi team,

My customer is evaluating MSP430FR5969IRGZ and they found 1 from 38 samples will not operate normally after programmed the code 2~3 hours later. 

They tried to re-write the program to the device but the same phenomenon occured.

They did not do anything after programming the code to the device.

Do you have any idea why this occurs and advice to troubleshoot ?

Best regards,

Kenley

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