CACHE MEMORY SYSTEM AND OPERATING METHOD FOR THE SAME

摘要

The present invention relates to a cache memory system capable of reducing power consumption, and a method for operating the same. According to an embodiment of the present invention, a cache memory system includes: an address buffer configured to receive address bits including a cache address and a tag address from the outside; a cache memory including a memory array, and configured to output, from a row of the memory array which the cache address designates, a plurality of tag data and a plurality of cache data corresponding to the tag data; a register configured to temporarily store a data set including the cache data output from the cache memory; and a controller configured to compare the tag address of the address buffer with the tag data and to receive new data from a region of a main memory which the tag address designates depending on a comparison result, wherein the controller replaces any one of the temporarily stored cache data with the new data to update the data set.