| 摘要 |
PURPOSE: A nonvolatile memory device and an operating method thereof are provided to improve the operation efficiency of a memory device by omitting an unnecessary verification operation in a section without a program or an erased memory cell. CONSTITUTION: A first program loop including a first program operation and a first program verification operation is repeated with regard to memory cells of a first page(S310). The number of operations of the first program loop is stored when a threshold voltage of the memory cells of the first page is higher than a first verification voltage(S311). A second program loop including a second program operation and a second program verification operation is repeated with regard to memory cells of a second page(S320).
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