Patent ID: 7673216
Filing Date: 2010-03-02
Classification: G06F,G11C

Abstract:
1. A cache memory device comprising: a data storage section including one or more ways to store part of data stored in a main memory; a tag information storage section to store tag information which differs among the one or more ways; and a storage section that is controlled by a selection signal to, when a memory data protection function is enabled, operate as a storage area to store memory data protection data used for performing error detection or error correction on the data and, when the memory data protection function is disabled, operate as an additional one or more ways to store part of the data stored in the memory, wherein the storage section merges data stored in the storage area for the memory data protection data corresponding to the one or more ways included in the data storage section by a specified-amount and outputs the merged data as data stored in one of the additional one or more ways.