[RAM] STM32F103VCT6 has 48KB RAM , By modifying the upper limit in keil5, I was able to use 58k

[Passerby]

Why ? Why can I use more than 48KB RAM?

 

Thanks!

[Passerby]

@mƎALLEm  @Peter BENSCH  @STTwo-32  @Tesla DeLorean 

[mƎALLEm]

Hello,

Physically the RAM size is there but it's not tested in factory. So using more than 48KB in that device is not guaranteed. 

This is not an exception on this device and the subject does not cover only the RAM, it could be also the Flash.

Hope I answered your question.

 

[Passerby]

Hello, @mƎALLEm 

Does this mean that this part of the Ram is untested and not corrupted

 

Thanks!

 

 

[Uwe Bonnes]

As STM32F103VC is same die as STM32F103V(D|E), same amount of ram is etched into the die. How this additional resources are exposed ore not and tested or not is totaly up to STM.

[Passerby]

Thank you!

[hamo]

Hello @Passerby ,

 

how did you modified the upper limit of RAM in Keil?

I am using Keil5 too.

[Passerby]

Options For Target -->Read/Write Memory Areas --> Size     , Change it to bigger

[hamo]

Thanks

[Andrew Neil]

Note that this is standard practice throughout the semiconductor industry - it's not just ST or STM32 

 

And it can also apply to extra peripherals, etc ...