Reconfigurable memory block redundancy to repair defective input/output lines

摘要

An embodiment of the present invention is a technique to provide a reconfigurable repair circuit in a memory device. A table structure contains a plurality of entries, each entry having a defective address word and a redundant address word. The redundant address word corresponds to a redundant block and is generated in response to a memory access to a defective input/output (I/O) line in a memory block of the memory device. A decoding circuit decodes the redundant address word to select a redundant I/O line in the redundant block to replace the defective I/O line.