| 摘要 |
A memory device includes a control circuit which controls a semiconductor region, a first bit line, a second bit line and a source line. The control circuit is comprised of means for making the first bit line floating, after pre-charging the first bit line to a first potential, means for varying the first bit line from the first potential to a third potential by providing a second potential to the second bit line, the semiconductor region and the source line with the first bit line in the floating state, and means for reading data of the first cell transistor to the first bit line, after setting the first bit line to the third potential.
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