Memory cell readout using successive approximation
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United States of America Patent
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Oct 26, 2010
Grant Date -
May 6, 2010
app pub date -
Oct 30, 2007
filing date -
Oct 30, 2006
priority date (Note) -
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Abstract
A method for operating a memory (20) includes storing analog values in an array of analog memory cells (22), so that each of the analog memory cells holds an analog value corresponding to at least first and second respective bits. A first indication of the analog value stored in a given analog memory cell is obtained using a first set of sampling parameters. A second indication of the analog value stored in the given analog memory cell is obtained using a second set of sampling parameters, which is dependent upon the first indication. The first and second respective bits are read out from the given analog memory cell responsively to the first and second indications.
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