Memory apparatus and method thereof for operating memory
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United States of America Patent
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May 10, 2011
Grant Date -
Aug 26, 2010
app pub date -
Feb 26, 2009
filing date -
Feb 26, 2009
priority date (Note) -
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Abstract
A memory apparatus and a method thereof for operating a memory are provided herein. The apparatus has the memory and a controller. The memory has a plurality of memory cells, and each the memory cells has a first side and the second side. Each of the first side and the second side is programmable to store one bit of data. The controller programs the first sides and the second sides of the memory cells to different levels. Several threshold voltage distributions of the programmed memory cells could be overlapped with each other. The controller distinguishes the bits of the memory cells by comparing the threshold voltages of the memory cells with the different levels and by comparing the threshold voltages with those of neighbor sides.
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