| 摘要 |
In a memory cell array, a plurality of memory cells each of which stores a plurality of bits are connected to a plurality of word lines and a plurality of bit lines and are arranged in a matrix. Control portions read a threshold level of a second memory cell adjacent to a first memory cell in the memory cell array, determine a correction level according to the threshold level read from the second memory cell, add the determined correction level to a read level of the first memory cell, and then read the threshold level of the first memory cell. A storage portion stores the correction level.
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