MEMORY SYSTEM
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United States of America Patent
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Issued Date -
Jul 7, 2016
app pub date -
Mar 11, 2015
filing date -
Mar 11, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
According to one embodiment, a memory system is connectable to an external device. The memory system includes a non-volatile memory, a control unit, and a temperature detector. The control unit is configured to manage the count information relating to a count of writes or a count of erases in the non-volatile memory in each predetermined region in the non-volatile memory. The temperature detector is configured to detect a first temperature in the memory system. The control unit is configured to add a value to the count information. The added value corresponds to the count of writes or the count of erases occurred after a previous update of the count information and the first temperature. The control unit is configured to determine a degree of deterioration of the non-volatile memory based on the count information after the addition.
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