When does FLASH lose data

[qli.3]

在我的使用中，一些�?�数是在�?�片机（STM32F446ZET6）的闪存中�?置的，但在未知情况下�?�数丢失。在断电之�?，有断电和通电�?作。请问这是什么原因造�?的？解决方案是什么？

[Amelie ACKERMANN]

Hello @qli.3​ ,

Thank you for your question!

To ensure a timely response, I recommend posting questions in English which is the main working language across teams at ST.

To support you in your request, I translated your question via google translate. Please feel free to double check if it is correct and make necessary adjustments by commenting:

"In my use, some parameters are configured in the flash memory of the microcontroller (STM32F446ZET6), but the parameters are lost in unknown situations. There is a power off and power on operation before the power off. What is the cause of this, please? What is the solution?"

[Tesla DeLorean]

It's a process

It requires voltage and current to generate charge

If you try to erase or write flash into a collapsing supply you are prone to find the failure window.

>>What's the solution?

Use Journalled writing of data

Use Integrity checking

Use Redundancy, store data in more than one place