Flexible row redundancy system

Abstract

A row redundancy system is provided for replacing faulty wordlines of a memory array having a plurality of banks. The row redundancy system includes a remote fuse bay storing at least one faulty address corresponding to a faulty wordline of the memory array; a row fuse array for storing row fuse information corresponding to at least one bank of the memory array; and a copy logic module for copying at least one faulty address stored in the remote fuse bay into the row fuse array; wherein the copy logic module is programmed to copy the at least one faulty address into the row fuse information stored in the row fuse array corresponding to a predetermined number of banks in accordance with a selectable repair field size. Furthermore, a method is provided for replacing faulty wordlines of a memory array including the steps of: selecting a repair field size; storing at least one faulty address into a first memory; and copying the stored at least one faulty address from the first memory into a variable number of storage cells of a second memory, wherein each storage cell of said second memory corresponds to a respective bank of said plurality of banks; and wherein the variable number of storage cells is in accordance with the selected repair field size.

Dependencies are inferred from the claim text.