Reference current generating circuit of nonvolatile semiconductor memory device
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United States of America Patent
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Jun 17, 2008
Grant Date -
Oct 12, 2006
app pub date -
Apr 11, 2006
filing date -
Apr 12, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A reference current generating circuit has a plurality of current mirror circuits each having a mirror ratio different from another one, and generates a plurality of reference currents based on a current that flows to the reference memory cells. A plurality of sense amplifiers detects a current that flows to a selected memory cell based on the reference currents generated by the reference current generating circuit.
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