| 摘要 |
PURPOSE: A post-program method for a flash memory device is provided to reduce a post-program execution time by performing a post-program so as to select at least two bit lines, and improves an entire performance of a chip. CONSTITUTION: A pre-post program is sequentially performed (302) for a pre-post program time about all bit lines after resetting a bit line address counter. A bit line address counter is reset again, and it is checked that a post-program is successful or not about one bit line. If the post-program is successful, the post-program verification is repeated until a post-program is succeeded. If the post-program is not successful, many line lines are selected and a main post program is performed during a main post program execution time. If the main post program is successful, the main post program verification is repeated until a post program is successful to all bit lines. If the post-program is not successful, an erasing action is failed and terminated.
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