8.12.6.7 Activation or Deactivation of Protections

It is possible to activate or deactivate each protection separately by writing in the Normal and Backup Mode Protection registers. These registers are hidden and the only way to make them appear is to write SECUMOD_CR.KEY with the correct value. This field acts on a toggle basis: writing the correct value alternatively makes the registers appear and disappear.

At Reset state, all protections are activated except the four corresponding to the intrusion detectors (PIOBUx must be programmed).