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code protection stm32l151cct6

Question asked by Palma.Lorenzo.001 on May 12, 2017

I'm using a stm32l151cct6 MCU and I want to protect a sector of the flash memory using Option Bytes in ST-LINK Utility.
When I try to use the mode "write protection", the application code works fine. When I try to use the mode "read/write protection", it seems that the selected sector memory is erased and the application code don't work.
How I can solve the problem please?
Thanks.

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