2026-01-24 1:56 AM - edited 2026-01-24 1:59 AM
I try to enable the PCROP Feature on a STM32H753
I am using the STM32CubeProgrammer and connect via ST-Link V2
After connecting, I go to the "OB" page and set the PROT_AREA_END1 value to 0xFFF and activate the DMEP1
Then I press the "Apply" button and this happens in the log:
Option byte command : -ob PROT_AREA_END1=0xFFF
PROGRAMMING OPTION BYTES AREA ...
Bank : 0x00
Address : 0x5200201c
Size : 308 Bytes
UPLOADING OPTION BYTES DATA ...
Bank : 0x00
Address : 0x5200201c
Size : 308 Bytes
OPTION BYTE PROGRAMMING VERIFICATION:
Error: Expected value for Option Byte "PROT_AREA_END1": 0xFFF, found: 0x0
Error: Option Byte Programming failedAnd then, I always get the error Message "Option Byte Programming failed"
The RDP has level 0, but the same error occures, if I try to set RDP to level 1 at the same time.
In the documentation I found no hint, that there is any other prerequisite must be met to set the PCROP.
Has anyone an idea what the problem could be?
(In generally the chip works, I can erase and flash it without any problems)