| http://www.w3.org/ns/prov#value | - A nonvolatile semiconductor memory device comprising:a memory cell array wherein electrically programmable and erasable memory cells for storing n-level data, where n is a whole number not smaller than 3, are arranged in a matrix; a data circuit for storing write data; and a write verify circuit for determining whether a written state of a memory cell in the memory cell array becomes a predetermin
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