Data recording device
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United States of America Patent
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Sep 4, 2007
Grant Date -
Feb 8, 2007
app pub date -
Mar 3, 2006
filing date -
Aug 8, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
An data recording device according to an aspect of the present invention includes a memory cell array in a memory chip, a refresh circuit which executes a refreshing of the memory cell array, a refresh control circuit which executes refreshing at a time interval which is shorter than a data hold time and manages a data hold time, and an internal power source which supplies a power source electric potential to the refresh circuit and the refresh control circuit in a state in which the data recording device is removed from an external device.
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