64.5.7 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 command field acts on a toggle basis: writing the correct value makes the registers appear and disappear.

At reset state, all protections are activated except the sixteen corresponding to the intrusion detectors (need to program PIOBUx).