RDP regression - OEMKEY1 and OEMKEY2

[Surya S]

Hello, 

What is the status of the OEMKEY1 and OEMKEY2  when the RDP regression happens. Are those keys are also erased ?

 

 

Thanks in advance.

Best Regards,

Surya S

[STTwo-32]

Hello @Surya S 

when an RDP regression happens, the values of the OEMKEY1 and OEMKEY2 stay as set before the regression. To clear them you have to  write  0xFFFFFFFF 0xFFFFFFFF in both OEM1KEY and OEM2KEY
Flash memory option bytes. For more details, refer to the part 10 of the  AN5347.

Best Regards.

STTwo-32

[Frantz LEFRERE]

Hello @Surya S 

FYI we have created a short mooc about this functionality :

https://www.st.com/content/st_com/en/support/learning/stm32-education/stm32-moocs/stm32u5-rdp.html

Best Regards.

Frantz