Skip to main content
Associate II
July 2, 2026
Question

STM32U588 - Cortex M33 - Understand TrustZone

  • July 2, 2026
  • 1 reply
  • 33 views

Hi team,

we have custom project based on STM32U558 controller with TrustZone, and I am only involved in small part of the project.

but i would like to learn about this trust zone is enabled and how both secure and non secure zone are talking.

how i will identify which peripheral and which pins are intialised as secure and non secure part.

also will appreciate if provided with reading section for trustzone.(prefer small blogs, not big one just because i am a new to trust zone).

1 reply

Andrew Neil
Super User
July 2, 2026

AN5347 Introduction to Arm® TrustZone® features on STM32L5, STM32U5, and STM32U3 MCUs

 

 

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.