SBSFU intrusion

[Istillaga]

Hi

I'm using the SBSFU example for the STM32U5 microcontroller. After an intrusion, the board enters a locked state. Is there a way to receive a notification when an intrusion occurs and another when it has ceased, indicating that the board can return to its original state?

[Bubbles]

Hi @Istillaga,

for the intrusion mechanism explanation it's best to go to the RM0456 reference manual. You see that the intrusion is described in the Flash memory section, starting from chapter 7.6.2. There's nothing to configure about it. It's linked to the RDP level and protects the SW from readout attempts.

Only way to leave the intrusion state is reset.

BR,

J