| 摘要 |
Here is disclosed a memory circuit having a regular memory cell group, a redundant memory cell group, and an improved redundant decoder circuit for selecting the redundant memory cell group is there is any defect in the regular memory cell group. The redundant decoder circuit includes first and second programming circuits, and it is inoperative when the first programming circuit has not been programmed, operative when the first program element has been programmed and the second programming circuit has not been programmed, and inoperative when the second program circuit has been programmed. |
