Method for power-saving multi-pass sensing in non-volatile memory
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United States of America Patent
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Nov 4, 2008
Grant Date -
Jul 5, 2007
app pub date -
Dec 29, 2005
filing date -
Dec 29, 2005
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Abstract
Power-saving techniques are employed in sensing a group of non-volatile memory cells in parallel. One technique is that the coupling of the memory cells to their bit lines is delayed during a precharge operation in order to reduce the cells'currents working against the precharge. Another technique is that a power-consuming precharge period is minimized by preemptively starting the sensing in a multi-pass sensing operation. High current cells not detected as a result of the premature sensing will still be able to be detected in a subsequent pass.
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