Communication Dans Un Congrès Année : 2025

Ultra-Fast and High-Reliability VCMA-MTJ Based TCAM for Precision Search Operations

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This paper presents the design and performance evaluation of a non-volatile VCMA-MTJ-based Ternary Content Addressable Memory (TCAM), focusing on energy efficiency, search speed, and reliability. Although traditional DMTJ-based NV-TCAMs offer reliability, they often encounter data overwriting during search operations. To overcome this issue, we introduce a novel VCMA-MTJ architecture that employs voltagecontrolled state transitions, effectively eliminating the risk of memory overwrite and ensuring stable and robust operation. Monte Carlo simulations demonstrate that the proposed design achieves a Search Error Rate (SER) of 0.7% for a 144-bit word, with a read energy consumption of 49.94fJ/bitcell and a search time of 0.777ns. These results highlight the potential of VCMA-MTJ-based TCAM for high-density, energy-efficient memory applications that offer significant improvements in reliability and performance over existing technologies. Future efforts will focus on further reducing energy consumption while maintaining the demonstrated high reliability.

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hal-05055009 , version 1 (23-10-2025)

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Kevin Vicuña, Stéphane Koffi, Laurent Raymond, Lionel Trojman. Ultra-Fast and High-Reliability VCMA-MTJ Based TCAM for Precision Search Operations. IEEE 16th Latin America Symposium on Circuits and Systems (LASCAS 2025), Feb 2025, Bento Gonçalves, Brazil. pp.1-5, ⟨10.1109/LASCAS64004.2025.10966309⟩. ⟨hal-05055009⟩
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