Patent ID: 9047991
Filing Date: 2015-06-02
Classification: G11C

Abstract:
1. An apparatus, comprising: a repair controller independent from and coupled to a primary memory having a redundant area, the repair controller including a tag random access memory (RAM) and an auxiliary redundant data RAM, the tag RAM including repair tags having repair tag fields and a redundant memory cell location field, the repair tag fields to store status information indicating whether a row repair is needed for a particular row, and the redundant memory cell location field to store data associated with defective memory cells, wherein the repair tag fields include a partial row repair indicator to indicate whether a partial row repair or a complete row repair is to be performed for the particular row, and wherein the redundant memory cell location field indicates whether repair data is stored in the redundant area of the primary or stored in the auxiliary redundant data RAM of the repair controller; and a comparator to compare at least a portion of an address received from a memory controller with at least a portion of an address received from the tag RAM to generate a control signal based on the repair tag fields to instruct a selector to select data from either the redundant area of the primary memory or the auxiliary redundant data RAM of the repair controller.