Low Power Set-Associative Cache with Single-Cycle Partial Tag Comparison

This paper presents a novel structure for partial tag comparison cache. By triggering partial comparison unit and data sub-banks with inversed clock, the partial comparison can be activated before cache access, leading to single-cycle hit time. Meanwhile, it consumes less energy in each cache access than that of conventional cache by filtering out unnecessary tag and data array accesses. Simulation results show the proposed cache achieves an average reduction on power consumption of 24.8 % compared with predictive cache