Low‐energy spin‐orbit torque MTJ‐based non‐volatile flip‐flop with data‐aware backup technique

Abstract

Spin‐orbit torque magnetic tunnel junction (MTJ) based non‐volatile flip‐flops (NVFFs) have been introduced to provide zero‐leakage standby state without data loss in power‐gating mode. In this Letter, the data‐aware backup scheme for NVFF, where significant energy can be saved by performing data backup only when the stored data and the current data are different is proprosed. Low‐area backup signal generator is also proposed for the proposed data backup scheme. The simulation results with 65 nm process show 88.7% reduction in backup energy when the stored data and the current data are equal.