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The MPU is a component for memory protection. The processor supports the standard ARMv7 Protected Memory System Architecture (PMSAv7) model. The MPU provides full support for:
protection regions
overlapping protection regions
access permissions
exporting memory attributes to the system.
MPU mismatches and permission violations invoke the programmable-priority MemManage fault handler. For more information, see Memory Manage Fault Address Register.
You can use the MPU to:
enforce privilege rules
separate processes
enforce access rules.