Neuromorphic
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
Reference
- 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. 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. 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.