Difference between revisions of "STM32 Memory Map"

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[[Category:C]][[Category:STM32 Development]][[Category:Embedded]][[Category:Work in progress]][[Category:STM32]]{{metadesc|STM32 Memory Map/Layout Details}}
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[[Category:C]][[Category:STM32 Development]][[Category:Embedded]][[Category:Work in progress]][[Category:STM32]]{{metadesc|Understanding STM32 Memory Map/Layout Details}}
 
[[STM32]] [[MCU]]s all (?) use the following memory map to some degree.  There are minor differences so always check the relevant datasheet for the specific [[MCU]] being used.
 
[[STM32]] [[MCU]]s all (?) use the following memory map to some degree.  There are minor differences so always check the relevant datasheet for the specific [[MCU]] being used.
  

Revision as of 01:48, 1 September 2024

STM32 MCUs all (?) use the following memory map to some degree. There are minor differences so always check the relevant datasheet for the specific MCU being used.

STM32F4xx Memory Map.png

The most interesting bit is the detail in the lower left corner specifying the two first blocks of memory:

STM32 Memory Detail.png

Of these, the most interesting for a new developer are:

  • Flash - 0x8000000

This is where you upload your application.

  • RAM - 0x20000000

This is where dynamic variables are allocated.

All internal peripherals are controlled through registers - each with a specific address. But if using HAL it is not necessary to know these addresses.