STM32H563RG internal flash memory Holding?

[YJin.11]

When reading the internal flash memory in the STM32H563RG MCU, there is a phenomenon that the core stops when reading 1 byte of sector 127 (0x080FE000) of 1 bank.

When reading, it simply accesses the pointer and copies the data.

*chBuf++ = *InternalFlashAddr++; // char* type

Other areas read fine.

Why ?

[YJin.11]

I couldn't find an answer to the above problem, so I set the area from 0x080FE000 to 0x080FFFFF to be unused.

If anyone knows the cause of this, please let me know.

[Tesla DeLorean]

It Faults or locks up requiring a reset?

Need to present a better case, with example that illustrates.​