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Physical memristor/RRAM/resistive switching device SPICE compact model, that is able to accurately fit both unipolar/bipolar devices settling to its current-voltage relationship.
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README.md

VLSI Memristor/RRAM SPICE Compact Model

README

version v1.2.1, 21/04/2017

Author contact:

License:

Copyright of the model is maintained by the developers, and the model is distributed under a Dual-Licence mode.

  • GPL License apply for academic purposes. If you use this model in your work, you are requested to cite [1] in the reference. GitHub Repository and Downloads
  • Commercial license for other purposes not meeting GPL license: Contact fgarcia@die.upm.es

Short Changelog:

v1.2.1: Experiments on advanced modeling of variability and degradation v1.2.0: CF degradation model added through src/memristor_degradation.scs

Short Description

Physical memristor/RRAM/resistive switching device SPICE compact model, that is able to accurately fit both unipolar/bipolar devices settling to its current-voltage relationship.

Main capabilities:

  • Accurate modeling of dynamic resistance, mimicking physical device response.
  • Modeling switching behavior for bipolar/unipolar devices.
  • Cycle and switching event count.
  • Modular and extensible: Temperature aware case of study.
  • Variability aware: voltage/cycle dependent RTN, cycle to cycle conduction changes.
  • Provision of variability dynamics and resistive state retention handling, defining how the device degrades through time/cycle stress.
  • Explicit support for multi-level storage, allowing the modeling of Pristine State -the initial High Resistive State (HRS) prior any electroforming-.
  • Project page: http://vlsi.die.upm.es/memristor

Both LT-Spice and Cadence Spectre compact models/test benches are provided.

Compact model examples:

  • Advanced variability and degradation modeling examples in spectre/bipolar_aSiCCuTiN/experiment_advanced_variability_degradation folder.
  • Bipolar examples in X/bipolar_aSiCCuTiN and spice/charge_controlled folders.
  • Unipolar examples in X/unipolar_NiHfO2Si folder.
  • Variability (RTN and cycle/voltage dependent) examples in spectre/bipolar_aSiCCuTiN folder
  • RRAM Multi-level examples in spectre/bipolar_aSiCCuTiN and spice/bipolar_aSiCCuTiN folders
  • Pristine (Pre-forming) state examples in spectre/bipolar_aSiCCuTiN folder
  • Temperature-dependency examples in spectre/bipolar_aSiCCuTiN folder
  • Standard (phenomenological) charge controlled examples in spice/charge_controlled folder

Variability example

Full Description

See SPICE Compact Modeling of Bipolar/Unipolar Memristor Switching Governed by Electrical Thresholds, Fernando García-Redondo, Robert P. Gowers, A. Crespo-Yepes,Marisa López-Vallejo and Liudi Jiang, IEEE Transactions on Circuits and Systems--I: Regular Papers, 2016, DOI: 10.1109/TCSI.2016.2564703

See Advanced Integration of Variability and Degradation in RRAM SPICE Compact Models Fernando García-Redondo, Marisa López-Vallejo and Carlos López Barrio Department of Electronic Engineering, Technical University of Madrid, UPM { fgarcia, marisa, barrio } @die.upm.es IEEE 14th International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design (SMACD 2017) 2017.

Proyect pages:

Memristor Publications:

Compact Model Publications

  • [1] SPICE Compact Modeling of Bipolar/Unipolar Memristor Switching Governed by Electrical Thresholds Fernando García-Redondo, Robert P. Gowers, A. Crespo-Yepes,Marisa López-Vallejo and Liudi Jiang IEEE Transactions on Circuits and Systems--I: Regular Papers

    2016, DOI: 10.1109/TCSI.2016.2564703

  • [2] Advanced Integration of Variability and Degradation in RRAM SPICE Compact Models Fernando García-Redondo, Marisa López-Vallejo and Carlos López Barrio IEEE 14th International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design (SMACD 2017) 2017.

Memristor Application Framework Publications

  • [3] Building Memristor Applications: From Device Model to Circuit Design Fernando García-Redondo; Marisa López-Vallejo; Pablo Ituero IEEE Transactions on Nanotechnology

    2014, DOI: 10.1109/TNANO.2014.2345093

  • [4] A CAD Framework for the Characterization and Use of Memristor Models Fernando García-Redondo, Marisa López-Vallejo, Pablo Ituero, Carlos López Barrio Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design (SMACD), 2012 International Conference on

    2012, DOI: 10.1109/SMACD.2012.6339408

  • [5] Model Validation and Simulation Framework for Novel Nanometer Devices Fernando García-Redondo, Marisa López-Vallejo, Pablo Ituero, Carlos López Barrio Conference on Design of Circuits and Integrated Systems 2012 (DCIS 2012), At Avignon (France)

    2012, DOI: 10.13140/2.1.1323.8721

Memristor In Circuit Simulators, Mathematical Description Publications

  • [6] The tractability index of memristive circuits: branch-oriented and tree-based models. Fernando García-Redondo, Ricardo Riaza Mathematical Methods in the Applied Sciences.

    2012 DOI: 10.1002/mma.2544

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