SPRUJ55D September 2023 – July 2025 AM263P2 , AM263P2-Q1 , AM263P4 , AM263P4-Q1
The device incorporates multiple system Memory Protection Units (MPU) aka Firewall in the interconnect for security purpose or to ensure freedom from interference (FFI) in safety application. Note that these are distinct from the MPU which is part of R5FSS (explained in section R5FSS Features).The choice of using the MPU for security or for FFI is an application level decision.
The MPU works by allowing access to the underlying memory map (Peripheral or Memory) for authorized initiators and disallowing access to other initiators.