Low sensing current non-volatile flip-flop
A low sensing current non volatile flip flop includes a first stage to sense a resistance difference between two magnetic tunnel junctions (MTJs) and a second stage having circuitry to amplify the output of the first stage. The output of the first stage is initially pre-charged and determined by the resistance difference of the two MTJs when the sensing operation starts. The first stage does not have a pull-up path to a source voltage (VDD), and therefore does not have a DC path from VDD to ground during the sensing operation. A slow sense enable (SE) signal slope reduces peak sensing current in the first stage. A secondary current path reduces the sensing current duration of the first stage.
Industry-Academic Cooperation Foundation, Yonsei University QUALCOMM Incorporated
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Youngdon Seong-Ook Jisu Kyungho Seung H. Jung Pill
Jung Jung Kim Ryu Kang Kim