8.12.1 Description

The Security Module (SECUMOD) provides secure functions to offer protection against voltage, temperature, frequency and mechanical attacks on the chip.

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. The 5 Kbytes of SRAM use a non-imprinting mechanism.

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