How do STM32H753XIH6 and STM32L4S7AII6 verify memory contents?

Alex12 · ‎2025-02-06

Hello, does anyone know how these two components (STM32H753XIH6 and STM32L4S7AII6) verify that the data in both internal and external memories(Ram, Rom, Nor and Nand) are not corrupted?

Thanks for your help?

SofLit · ‎2025-02-06

Hello @Alex12 and welcome to the community,

In H7, the mechanism to check the memory consistency is the ECC either in internal RAM (RAM ECC) or the internal flash memory. For external memory only NAND mode is supporting ECC.

Refer to the AN5342 "How to use error correction code (ECC) management for internal memories
protection on STM32 MCUs "

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View solution in original post

SofLit · ‎2025-02-06

Hello @Alex12 and welcome to the community,

In H7, the mechanism to check the memory consistency is the ECC either in internal RAM (RAM ECC) or the internal flash memory. For external memory only NAND mode is supporting ECC.

Refer to the AN5342 "How to use error correction code (ECC) management for internal memories
protection on STM32 MCUs "

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.
PS:
1 - This is NOT an online support (https://ols.st.com) but a collaborative space.
2 - Please be polite in your reply. Otherwise, it will be reported as inappropriate and you will be permanently blacklisted from my help.