Resetting the entire memory of the NUCLEO-H755ZI-Q by shorting it. Is it possible?

[Domy_ST]

hello ST Community

Is it possible to erase all flash memory including the protection by shorting some hardware pins?

thanks for supports

[Jocelyn RICARD]

Hello ​@Domy_ST ,

there is no such feature in any STM32.

Erasing the flash memory is performed using mass erase handled through the FLASH peripheral.

The mass erase is also triggered when launching the regression from RDP1 to RDP0.

Some protection removal can require this regression. Everything is described in the reference manual

Best regards

Jocelyn

[Domy_ST]

hello ​@Jocelyn RICARD,

Yes, I know this RDP feature. The problem is that I have enabled memory protection and it does not let me connect in any way to ST-LINK to perform RDP regression. So the only way to reset it is to perform some hardware function that allows you to reset the memory protection and/or delete memory.

thanks

[Andrew Neil]

Are you asking whether this is built-in to the STM32 hardware, or whether this could be implemented in user software ?

 

​@Jocelyn RICARD has answered the first case.

[Domy_ST]

hello ​@Andrew Neil 

I wonder if this feature is integrated that allows you to reset it