Redundancy circuit and method for semiconductor memory

摘要

A redundancy configurations is described in which a redundant element is able to overpower a defective element without the need for physical disconnection or logical deselection and in which plural redundant rows (or columns) are provided to replace more than one defective row (or column) in an array or subarray. Redundancy configurations are further described in which a redundant element is able to overpower a defective element without the need for physical disconnection or logical deselection and in which a given redundant row (or column) may replace a defective row (or column) in one of plural subarrays representing distinct sets of rows (or columns).