Nonvolatile random access memory and nonvolatile memory system

摘要

A nonvolatile random access memory includes: a nonvolatile storage area that is randomly accessible and includes a data area to store data and an error-correcting-code area to store an error correcting code, the data area including at least one data area to which a data area unit size is assigned, the error-correcting-code area including at least one error-correcting-code area to which an error-correcting-code-area unit size is assigned; and a nonvolatile storage area controller to set a data size used when the at least one data area is accessed, as the data area unit size. The nonvolatile storage area controller manages the data area and the error-correcting-code area based on the set data area unit size and assigns the at least one error-correcting-code area with the error-correcting-code-area unit size to the at least one data area with the data area unit size based on the data area unit size.