Limitation with Read protection active with stm32f105rb

[Marco1]

Posted on June 15, 2016 at 16:03

Hi, 

I made a loader with usb STM32F105 and working properly. When I active the read protection bit, the loader not erase the pages. The security bit is on and of course, I can not debug and find where is the problem. There are limitations on access to the internal flash with the read protection active ?The write protection is disabled for all sectors.

[Marco1]

Posted on June 15, 2016 at 17:09

I found the answer....

â—� pages 0-1 (for high-density and connectivity line devices) are automatically write-protected. The rest of the memory can be programmed by the code executed from the main Flash memory (for IAP, constant storage, etc.), but it is protected against write/erase (but not against mass erase) in debug mode or when booting from the embedded SRAM.

Can i remove (via software) write protection from page 0 and 1 or its impossible ?