60.6.5.3 During and After BUSRAM4KB and BUREG256b Erase Sequence

Some flags can be read to know the real-time erase state of the memories. On completion of the erase sequence, the SECURAM ID interrupt line is asserted.

For more information on software management, see SECUMOD_SYSR.

After an Erase sequence, the memories are considered empty. The first write access to the memories indicates that they are not empty anymore and thus that other physical erases can be performed.

After reset or after an erase, it is recommended to reinitialize the full BUREG256b register bank to avoid unexpected values appearing on uninitialized addresses when starting to write into this memory. This can be achieved by writing zeros to unused locations.