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Lmali.1
Lmali.1
Associate III
August 27, 2020
Solved

Repeated write SD RAM + reset

  • August 27, 2020
  • 2 replies
  • 985 views

Hello,

I'm working on STM32WB55.

Is there any limitation to write to (internal) SD RAM and do a system reset?

I want to build an application that requires a lot of writing to SD RAM and then do system reset (and read the SD RAM and act according the data).

Thanks,

Lior

This topic has been closed for replies.
Best answer by Remi QUINTIN

​No there is no limitation on write access to the SDRAM before a reset.

Just be aware that not all the SRAM aera is accessible for the user. SRAM1 is accessible witout any limitation but SRAM2 (2a and 2b) have some protected areas defined by the option bytes SBRSA for SRAM2a and SNBRSA for SRAM2b.

2 replies

Remi QUINTIN
Remi QUINTINAnswer
Technical Moderator
August 27, 2020

​No there is no limitation on write access to the SDRAM before a reset.

Just be aware that not all the SRAM aera is accessible for the user. SRAM1 is accessible witout any limitation but SRAM2 (2a and 2b) have some protected areas defined by the option bytes SBRSA for SRAM2a and SNBRSA for SRAM2b.

Lmali.1
Lmali.1Author
Associate III
August 27, 2020

Thank you, this is what I thought but wanted to be sure

Thanks!

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