Experimental Validation of Memristor-Aided Logic Using 1T1R TaOx RRAM Crossbar Array

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Ankit Bende, Simranjeet Singh, Chandan Kumar Jha, Tim Kempen, Felix Cüppers, Christopher Bengel, Andre Zambanini, Dennis Nielinger, Sachin Patkar, Rolf Drechsler, Rainer Waser, Farhad Merchant, Vikas Rana


Memristor-aided logic (MAGIC) design style holds a high promise for realizing digital logic-in-memory functionality. The ability to implement a specific gate in a MAGIC design style hinges on the SET-to-RESET threshold ratio. The TaOx memristive devices exhibit distinct SET-to-RESET ratios, enabling the implementation of OR and NOT operations. As the adoption of the MAGIC design style gains momentum, it becomes crucial to understand the breakdown of energy consumption in the various phases of its operation. This paper presents experimental demonstrations of the OR and NOT gates on a 1T1R crossbar array. Additionally, it provides insights into the energy distribution for performing these operations at different stages. Through our experiments across different gates, we found that the energy consumption is dominated by initialization in the MAGIC design style. The energy split-up is 14.8%, 85%, and 0.2% for execution, initialization, and read operations respectively.

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