64.1 Description

The Security Module (SECUMOD) features different levels of security depending on the device reference. This section describes the protections embedded in the SECUMOD available on all devices.

This module embeds the secure memories (5 Kbytes of SRAM and a 256-bit register bank) dedicated to the storage of sensitive data. These memories are scrambled with a programmable 32-bit key.

When a fault is detected, regardless of the source, a clear signal can be sent automatically to the secure memories and clear their contents.

For information specific to dynamic tamper protection (PIOBU), refer to the document SAMA5D2 External Tamper Protections.

For information specific to temperature, voltage and frequency monitoring for SAMA5D23 and SAMA5D28, refer to the document SAMA5D23 and SAMA5D28 Environmental Monitors, available under Non-Disclosure Agreement (NDA). Contact a Microchip Sales Representative for details.