STM32H573 - missing BKPSRAM on memory map

RZub · ‎2026-02-03

Hello,

The datasheet and reference manual are missing information about the 4 KB Backup SRAM in the memory map.

Where can I find details about it?
We need to use this memory in both Secure and Non-Secure projects.

Thank you.

KDJEM.1 · ‎2026-02-04

Hello @RZub ;

You can refer to Table 5. Memory map and peripheral register boundary addresses (STM32H562/563/573xx) in RM0481 Rev 4: to find adresses:

Non-secure boundary address :0x4003 6400 - 0x4003 73FF

Secure boundary address: 0x5003 6400 - 0x5003 73FF

Is my reply answer your request?

Thank you.

Kaouthar

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.

View solution in original post

KDJEM.1 · ‎2026-02-04

Hello @RZub ;

You can refer to Table 5. Memory map and peripheral register boundary addresses (STM32H562/563/573xx) in RM0481 Rev 4: to find adresses:

Non-secure boundary address :0x4003 6400 - 0x4003 73FF

Secure boundary address: 0x5003 6400 - 0x5003 73FF

Is my reply answer your request?

Thank you.

Kaouthar

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.

mƎALLEm · ‎2026-02-04

Hello,

Non-secure boundary address :0x4003 6400 - 0x4003 73FF
Secure boundary address: 0x5003 6400 - 0x5003 73FF

From RM0481, Table 6. Memory map and peripheral register addresses

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.

RZub · ‎2026-02-04

Yes, this answers my question. Thank you!

The confusion was mainly due to naming: I was searching for BKPSRAM, while in this context it is referred to as BKPRAM. That’s why I couldn’t find it initially.

Thanks again for the clarification.