Faster programming of highest multi-level state for non-volatile memory
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United States of America Patent
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Sep 29, 2009
Grant Date -
May 1, 2008
app pub date -
Oct 30, 2006
filing date -
Oct 30, 2006
priority date (Note) -
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Abstract
A coarse/fine programming technique is used for programming to lower states while using a standard technique (not coarse/fine programming) for programming to the highest state(s). However, when the programming of the lower states is finished, a number of programming pulses are still needed to program the highest state. To improve the programming speed, a bigger step size and longer programming pulse can be used from the moment that the lowest states have been programmed. At the same time, the programming technique for the highest state can be changed to a coarse/fine programming technique.
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