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Programmable Threshold Logic Implementations in a Memristor Crossbar Array
- Source :
- Nano Letters; 20240101, Issue: Preprints
- Publication Year :
- 2024
-
Abstract
- In this study, we demonstrate the implementation of programmable threshold logics using a 32 × 32 memristor crossbar array. Thanks to forming-free characteristics obtained by the annealing process, its accurate programming characteristics are presented by a 256-level grayscale image. By simultaneous subtraction between weighted sum and threshold values with a differential pair in an opposite way, 3-input and 4-input Boolean logics are implemented in the crossbar without additional reference bias. Also, we verify a full-adder circuit and analyze its fidelity, depending on the device programming accuracy. Lastly, we successfully implement a 4-bit ripple carry adder in the crossbar and achieve reliable operations by read-based logic operations. Compared to stateful logic driven by device switching, a 4-bit ripple carry adder on a memristor crossbar array can perform more reliably in fewer steps thanks to its read-based parallel logic operation.
Details
- Language :
- English
- ISSN :
- 15306984 and 15306992
- Issue :
- Preprints
- Database :
- Supplemental Index
- Journal :
- Nano Letters
- Publication Type :
- Periodical
- Accession number :
- ejs65747569
- Full Text :
- https://doi.org/10.1021/acs.nanolett.3c04073