Program circuit of semiconductor
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United States of America Patent
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Sep 11, 2007
Grant Date -
Aug 31, 2006
app pub date -
Feb 24, 2006
filing date -
Feb 25, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A semiconductor integrated circuit device includes a storage element, program circuit, and sensing circuit. The storage element stores information by electrically irreversibly changing the element characteristics. The program circuit programs the storage element by electrically irreversibly changing its element characteristics. The sensing circuit senses the irreversibly changed element characteristics of the storage element in distinction from an unchanged state. The program circuit includes a high-voltage generator which irreversibly changes the element characteristics of the storage element by applying a high voltage to it, and a current source which supplies an electric current to the storage element having element characteristics changed by the high-voltage generator, thereby stabilizing the element characteristics.
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