Method of rewriting data in non-volatile memory, and system therefor
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United States of America Patent
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May 14, 1985
Issued Date -
N/A
app pub date -
Dec 22, 1983
filing date -
Sep 4, 1979
priority date (Note) -
Expired
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Abstract
A method and system for rewriting data in a non-volatile memory in which the rewriting of one access unit of stored data is executed by erase and write cycles, the stored data being protected in the event of an interruption in electric power. In rewriting into second data the first data which is stored in a data storage area of the non-volatile memory, either the first or the second data is stored in a save area of the non-volatile memory, after which the first data in the data storage area is erased, followed by the writing of the second data in the data storage region to complete the rewrite operation.
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