On account of the characteristics that the data cache will be frequently accessed in a short period of time

this paper proposes a low power data cache access methods based on hotspot initiative search and historical access trace.The method will automatically judge hot process

dynamically buffer the target hotspot location information to filter tag and redundant data memory access.Running EEMBC benchmark results show that compared with MRU prediction method(Most Recently Used) this approach can reduce 30.77% dynamic access power

and get 26.21% performance improvement.