EEPROM and mass erase when moving from LEVEL1 to LEVEL0

[albertLDS]

Hi there,

I'm under mass production with yours STM32L051x8 device.

I use the internal EEPROM to keep some data. Note that is not en emulation eeprom on flash, is just 512bytes on internal EEPROM.

In addition, I protect my code with ReadOutProtection Level =1.

Seems that when I update the version of customer firmware, the EEPROM data is erased. Seems that jumping from Level1 to Level0 produce a mass erase, and in consequence, the EEPROM is erased as well.

I would like to know if I'm right.

Jumping from Level1 to Level0 produce a mass erase, that produce erase the internal EEPROM as well?

Thanks a lot.

[mƎALLEm · Accepted solution]

Hello @albertLDS and welcome to the ST community,

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@albertLDS wrote:

Hi there,

Jumping from Level1 to Level0 produce a mass erase, that produce erase the internal EEPROM as well?

According to the errata sheet page 5:

Hope that answers your question.

[albertLDS]

Understood.

Thanks. Thanks for your quick answer.