Tohoku Univ. Technology：A Nonvolatile Register with a Reference Load Sharing Scheme：T24-081
Reduction in power consumption and area by minimizing the number of MTJ devices
Intermittent computing executes tasks as energy accumulates, enabling continuous edge computing under unstable, low-power energy harvesting conditions. Ensuring processing continuity before and after frequent power interruptions is essential. A nonvolatile logic circuit using nonvolatile registers allows internal state retention with only local data transfers, making it a promising option. Conventional nonvolatile registers connect 1-bit memory circuits (nonvolatile flip-flops, NV-FFs) per bit, requiring two MTJ devices per bit, leading to significant area and energy overhead. This invention proposes the Reference-Load Sharing Scheme (RLSS), where 1-bit information is retained between an MTJ device and a reference MTJ device using a sequential backup-restore process. This reduces MTJ device count, shares circuit functions, and achieves 49% lower energy consumption and 34% area reduction, as confirmed by simulations.
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The revenue generated from technology transfer is reinvested into universities and researchers as new research funding, which is used to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will actively promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by concluding basic technology transfer agreements with the following universities (as of June 1, 2025): - Tohoku University - Hirosaki University - Iwate University - Akita University - Fukushima University - Yamagata University - Tohoku Gakuin University - Iwate Medical University - Fukushima Medical University - Aizu University - Miyagi University - Hokkaido University - Muroran Institute of Technology - Showa Medical University
