MEMORY CONTROLLER, NONVOLATILE MEMORY SYSTEM WITH MEMORY CONTROLLER, AND CONTROL METHOD OF NONVOLATILE MEMORY

摘要

PROBLEM TO BE SOLVED: To efficiently manage a corresponding relationship between a logical page and a physical page without decreasing areas for storing data given from a host system.

SOLUTION: In each of physical blocks, a physical page in a physical block is divided into n (n is an integer being equal to or more than 2) groups. When writing user data given from a host system to each of the physical pages in the physical block, a number indicating a logical page corresponding to the user data is written in a physical page to which the user data is written, together with a number indicating a logical page corresponding to user data stored in another physical page belonging to the same group as that physical page.

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