Difference between revisions of "Core Coupled Memory (CCMRAM)"

From Stm32World Wiki
Jump to navigation Jump to search
Line 1: Line 1:
 +
[[Category:STM32]][[Category:STM32 Hardware]][[Category:STM32 Documentation]][[Category:STM32 Development]]{{metadesc|STM32 Core Coupled Memory - CCMRAM}}
 
Some [[STM32]] [[MCU]]s include a feature called [[CCMRAM]] ([[Core Coupled Memory]]), which is separate from the regular SRAM region.
 
Some [[STM32]] [[MCU]]s include a feature called [[CCMRAM]] ([[Core Coupled Memory]]), which is separate from the regular SRAM region.
  

Revision as of 02:32, 28 November 2024

Some STM32 MCUs include a feature called CCMRAM (Core Coupled Memory), which is separate from the regular SRAM region.

According to the datasheet, the memory in STM32F405 is:

STM32F405 Memory.png

In the block diagram it is shown like this:

STM32F405 Memory Architecture.png

It is worth noticing a few things. As the name implies this RAM is connected directly to the MCU core but separate from the AHB bus matrix. Looking at the bus matrix:

STM32F405 Bus Matrix.png

As a result, the CCMRAM can not be used with DMA.

Usage Examples