Memory circuit redundancy control

摘要

A memory having flexible column redundancy and flexible row redundancy comprises a multi-column stick configuration each column stick comprising a plurality of data lines. Further, the memory has a multi-row stick configuration, with each row stick comprising a plurality of data rows. Positioned on either side of the memory are redundant column sticks each comprising a plurality of data lines. Positioned above and below the memory are redundant row sticks, each comprising a plurality of data rows. A column redundancy control identifies a faulty operating column stick in the memory and generates a column shift control signal to a column shift multiplexer that responds to the column shift control signal to substitute in the memory a redundant column stick for the identified faulty operating column stick. Further, the memory comprises a row redundancy controller identifies a faulty operating row stick in the memory to generate a row shift control signal to a row shift multiplexer. The row shift multiplexer responds to the row shift control signal to substitute in the memory a redundant row stick for the identified faulty operating row stick in the memory.