Content-addressable memories (CAMs) allow searching a pattern, processing in parallel all the data stored. Beyond-CMOS technologies can provide new opportunities to improve CAM memories implementations both at the device and architectural level. In this article, we propose a ternary content-addressable memory cell based on skyrmion technology. The proposed memory cell is based on skyrmion racetrack memory. The cell is able to signal if the bit contained in the cell in form of skyrmion corresponds to an electrical input, the target of the search operation. The proposed design, verified by means of micromagnetic simulations, has an area of 0.054 mu m(2) and can perform a search operation in 3.3 ns with an energy of 10.5 fJ. The operation performed is non-destructive and does not require conversion between the magnetic and the electronic domains. For this reason, the designed cell has the potential to be used as a basic block for non-volatile CAM memories. Here, we propose also a layout structure to implement a CAM memory employing the proposed cell. This structure allows to achieve memory density comparable to traditional racetrack memories and execute at the same time CAM operations.


    Access

    Download


    Export, share and cite



    Title :

    A skyrmion content-addressable cell for skyrmion magnetic memories



    Publication date :

    2022-01-01



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :

    DDC:    629



    Spontaneous skyrmion conformal lattice and transverse motion during dc and ac compression

    Bellizotti Souza, J.C. / Vizarim, Nicolas / Reichhardt, C.J.O. et al. | BASE | 2023

    Free access


    Content Addressable Memory System Concepts

    Campi, A. V. / Dunn, R. M. / Gray, B. H. | IEEE | 1965


    Holographic Content-Addressable Data Storage

    Lasers and Electro-optics Society (Institute of Electrical and Electronics Engineers) | British Library Conference Proceedings | 2004


    Compressed Quadtree with Content-Addressable Memory

    Yang, D. / IEEE; Signal Processing Society | British Library Conference Proceedings | 1994