Memory protection unit

A memory protection unit (MPU), is a computer hardware unit that provide memory protection. It is usually implemented as part of the central processing unit (CPU).^[1] MPU is a trimmed down version of memory management unit (MMU) providing only memory protection support. It is usually implemented in low power processors that require only memory protection and does not need the full fledged feature of a memory management unit like virtual memory management. ^[2]^[3]

References

v t e Memory management
Memory management as a function of an operating system
Hardware	Memory management unit (MMU) Translation lookaside buffer (TLB) Input–output memory management unit (IOMMU)
Virtual memory	Demand paging Memory paging Page table Virtual memory compression
Segmentation	Protected mode Real mode Virtual 8086 mode x86 memory segmentation
Allocator	dlmalloc Hoard jemalloc libumem mimalloc ptmalloc
Manual means	Static memory allocation C dynamic memory allocation new and delete (C++)
Garbage collection	Automatic Reference Counting Boehm garbage collector Cheney's algorithm Concurrent mark sweep collector Finalizer Garbage Garbage-first collector Mark–compact algorithm Reference counting Tracing garbage collection Strong reference Weak reference
Safety	Buffer overflow Buffer over-read Dangling pointer Stack overflow
Issues	Fragmentation Memory leak Unreachable memory
Other	Automatic variable International Symposium on Memory Management Region-based memory management Memory pool
Memory management Virtual memory Automatic memory management Memory management algorithms Memory management software