| 摘要 |
PURPOSE: A programming method of a non-volatile memory device is provided to improve a cell distribution by using verification pulse having at least two levels. CONSTITUTION: In a programming method of a non-volatile memory device, a program pulse is applied to a word line(S220). The frequency of applying the program pulse is counted(S230). A first verification pulse is applied to the word line(S240). A second verification pulse is applied to the word line(S250). The verification pulse is applied. The level of the verification pulse is determined the frequency. |
