Non-volatile memory apparatus including first and second address conversion tables stored in volatile and nonvolatile memories for improved access at power up
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United States of America Patent
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Aug 28, 2001
Grant Date -
N/A
app pub date -
Nov 12, 1998
filing date -
Nov 13, 1997
priority date (Note) -
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Abstract
A non-volatile memory apparatus has a volatile memory device that stores a first address conversion table, and a non-volatile memory device that stores a second address conversion table. A physical location of the second address conversion table stored in the non-volatile memory device is obtained based on a logic sector address relative to a received request and the first address conversion table stored in the volatile memory device. The second address conversion table stored in the non-volatile memory device is obtained based on the physical location obtained by a first address obtaining device. Data is written in the non-volatile memory apparatus based on the logic sector address relative to the request received by a receiving device and the second address conversion table. The memory device also performs error correction check and correction, renews the second address conversion table. The second address conversion table is renewed in units of pages, the physical location in the non-volatile memory device is designated in units of blocks each containing a plurality of pages.
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