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waclawek.jan
Super User
January 31, 2026
Solved

STM32F446 with TrustZone?

  • January 31, 2026
  • 4 replies
  • 317 views

Isn't TrustZone something which started to be only since Cortex-M33?

waclawekjan_0-1769857894945.png

JW

Best answer by RomainR.

Hi @waclawek.jan 

Thank you for reporting this unexpected typo in this new release.
Of course it must be corrected as "The STM32F4446xx devices have an Arm®(a) Cortex®-M4 with FPU core"
I will make the necessary as soon as possible to fix it.

Best regards,
Romain,

4 replies

RomainR.
RomainR.Best answer
ST Employee
January 31, 2026

Hi @waclawek.jan 

Thank you for reporting this unexpected typo in this new release.
Of course it must be corrected as "The STM32F4446xx devices have an Arm®(a) Cortex®-M4 with FPU core"
I will make the necessary as soon as possible to fix it.

Best regards,
Romain,

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
RomainR.
ST Employee
February 2, 2026

Hi @waclawek.jan 

I created a internal request (internal tracking number: 226424) to fix this typo in the next RM0390 revision and which will be published as soon as possible.

Best regards,

Romain,

  

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
RomainR.
ST Employee
February 14, 2026

Hi @waclawek.jan 

The new RM0390 Rev9 is now available.

Best regards,

Romain,

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
waclawek.jan
Super User
February 15, 2026

Hi @RomainR. ,

 

Thanks for letting me know.

JW