NON-VOLATILE STORAGE DEVICE AND CONTROL METHOD THEREOF

摘要

A memory card (100) includes: a flash memory (120) having a plurality of physical blocks (122) consisting of a plurality of pages for storing data and a page register (121) for holding data to be written into the pages, and a controller (110) which references, upon data rewrite, a valid block table (114) indicating whether a physical block (122) contains valid data, specifies an invalid block, erases it, and transfer data to be written to the page register (121) while executing the erase.