| 摘要 |
PROBLEM TO BE SOLVED: To obtain a low-cost storage device capable of using a buffer memory having capacity being smaller than the sector capacity of a mounted flash memory. SOLUTION: This storage device 1 uses two bits in a low order of a media sector address received from a host system 12 as data corresponding to a column address in a sector of a flash memory 10. A data transfer controlling part 8 starts data transfer to the memory 10 from a buffer memory 4 in timing corresponding to column addresses 0h, 200h, 400h and 600h respectively, for instance, on the case low order two bits 00, 01, 10 and 11 of a media sector address are inputted when the sector capacity of the memory 10 is defined as 2048 bytes and the sector capacity of the device 1 is defined as 512 bytes.
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