Method of reducing wearout in a non-volatile memory with double buffer
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United States of America Patent
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May 1, 1990
Grant Date -
N/A
app pub date -
Apr 29, 1988
filing date -
Apr 29, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of preventing a power failure from corrupting data being written to a non-volatile memory. Before a write operation is performed, information is written to a double buffer to reconstruct the steps that will be performed during the write operation. A flag is set indicating that the information in the double buffer is accurate. The write operation is then performed and the flag is cleared. The double buffer is dynamically moved throughout the non-volatile memory to distribute the wearout of the non-volatile memory as evenly as possible.
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