The FRAM can be protected by the MPU from inadvertent CPU execution, read access, or write access. Features of the MPU include:

• IP encapsulation with programmable boundaries in steps of 1KB (prevents reads from "outside"; for example, through JTAG or by non-IP software).
• Main memory partitioning is programmable up to three segments in steps of 1KB.
• Access rights of each segment can be individually selected (main and information memory).
• Access violation flags with interrupt capability for easy servicing of access violations.