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Neuromorphic architecture

  • Bottle-neck issue in conventional Von Neumann Architecture.
  • Neuromorphic architecture has been studied which is similar to human brains.
  • Neural networks can be easily fabricated in the form of a cross-point array.
RRAM for synaptic memory device

  • RRAM as synapse device: simple 2-terminal structure, low power operation, scalability.
  • Switching mechanism: Oxygen migration in oxide layers which result in analog conductance change.
Neuromorphic Application

  • To emulate biological characteristics, neuromorphic system with massive parallelism and fault tolerance has been developed.
  • Application : Visual image processing and speech recognition
  1. 1.   J. Woo et al., "Optimized Programming Scheme Enabling Linear Potentiation in Filamentary HfO2 RRAM Synapse for Neuromorphic Systems." IEEE Transactions on Electron Devices 63.12 (2016): 5064-5067.
  2. 2.   B. Attarimashalkoubeh et al., "Effects of Ti buffer layer on retention and electrical characteristics of Cu-based conductive-bridge random access memory (CBRAM)." ECS Solid State Letters 3.10 (2014): P120-P122.
  3. 3.   K. Moon et al., "High density neuromorphic system with Mo/Pr0.7Ca0.3MnO3 synapse and NbO2 IMT oscillator neuron." Electron Devices Meeting (IEDM), 2015 IEEE International. IEEE, 2015.