| 摘要 |
A repair module for repairing one of n bit lines through m bit bus in a memory, a repair device using the same, and a method thereof are provided herein, wherein m>=n. In the repair method, a switching control signal and a selecting control signal are generated according to an index value of the one of n bit lines. A dummy line is switched to the one of n bit lines by shifting from 1st bit line to the one of n bit line one by one according to the switching control signal for replacing the one of n bit lines. Then, the Lth bit line or the dummy line is selected for signal transmission according to the selecting control signal, wherein 1<=L<=m. Therefore, the data can be transmitted through the undamaged bit line by replacing the defective bit line with the dummy line.
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