SEMICONDUCTOR DEVICE IN WHICH METAL LINE IN NON- OPERATION STATE CAN BE REPLACED

摘要

PROBLEM TO BE SOLVED: To obtain a semiconductor integrated circuit device containing a redundant metal line that can replace a metal line in a non-operation state for connecting circuit blocks thereto. SOLUTION: A conductive data line in a non-operation state is decoupled to a circuit block to which the line is connected because of defect or the other reason. A conductive data line having defect is replaced by a redundant line by coupling the same circuit block. A spare conductive block is not required. This semiconductor integrated circuit device is provided with a circuit block 5, a conductor 4 coupled electrically to the circuit block, the other conductor 2 adapted so as to be coupled electrically to the circuit block, a first means 16, 18 for discriminating whether the conductor 4 is in an operation state or a non-operation state, a first switch 14 decoupling electrically the conductor 4 from a circuit block 5, and a second switch 12 for coupling the other conductor 2 to the circuit block 5.