CONTROLLER FOR CONTROLLING NON-VOLATILE SEMICONDUCTOR MEMORY AND METHOD OF CONTROLLING NON-VOLATILE SEMICONDUCTOR MEMORY

Abstract: according to one embodiment, a write instructing unit instructs a data access unit to write, in a storage area of a data storage unit indicated by a first physical address, write object data, instructs a management information access unit to update address conversion information, and instructs a first access unit to update the first physical address. a compaction unit extracts a physical address of compaction object data, instructs the data access unit to read the compaction object data stored in a storage area of the data storage unit indicated by the physical address, instructs the data access unit to write the compaction object data in a storage area of the data storage unit indicated by a second physical address, instructs the management information access unit to update the address conversion information, and instructs a second access unit to update the second physical address.

Inventor(s): Kazuhiro FUKUTOMI, Kenichiro YOSHII, Shinichi KANNO, Shigehiro ASANO

CPC Classification: G06F12/0246 ({in block erasable memory, e.g. flash memory})

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