60.6.6.1 Normal Mode

When running in Normal mode, the SECUMOD monitors all the sensors. Some of the sensors are out of the backup power domain, for example JTAG and core voltage.

When detecting an error, the Protection Manager sends a Clear signal to the automaton, which starts the secure memories Erase sequence if the memory is not empty.

The user can generate an interrupt signal (IRQ) without starting the Erase sequence. That choice is defined by writing either in SECUMOD_NMPR or in SECUMOD_NIEPR.

The user can generate a software clear of BUSRAM4KB and BUREG256b by setting SECUMOD_CR.SWPROT. Setting this bit has no effect during the automatic Erase sequence. After completion of the erase process, the SECURAM ID interrupt line triggers an interrupt to the processor.