Can I read Ultra-low Energy charge trap flash based synapse enabled by parasitic leakage mitigation on EtoBox?

Ultra-low Energy charge trap flash based synapse enabled by parasitic leakage mitigation by Shrivastava, Shalini; Chavan, Tanmay; Ganguly, Udayan is a scholarly article available to read on EtoBox.

What is Ultra-low Energy charge trap flash based synapse enabled by parasitic leakage mitigation about?

Brain-inspired computation promises complex cognitive tasks at biological energy efficiencies. The brain contains $10^4$ synapses per neuron. Hence, ultra-low energy, high-density synapses are needed for spiking neural networks (SNN). In this paper, we use tunneling enabled CTF (Charge Trap Flash) stack for ultra-low-energy operation (1F); Further, CTF on an SOI platform and back-to-back connected pn diode and Zener diode (2D) prevent parasitic leakage to preserve energy advantage in array operation. A bulk $100 {\mu}m $ x $100 {\mu}m$ CTF operation offers tunable, gradual conductance change $({\Delta}G) i.e. 10^4 $levels, which gives $100$x improvement over literature. SPICE simulations of 1F2D synapse shows ultra-low energy $(\leqslant 3 fJ/pulse)$ at 180 nm node for long-term potentiation (LTP) and depression (LTD), at 180nm node for long-term potentiation (LTP) and depression (LTD), which is comparable to energy estimate in biological synapses (10 fJ). A record low learning rate (i.e., maximum ${\Delta}G< 1%$ of G-range) is observed - which is tunable. Excellent reliability ($>10^6 endurance cycles at full conductance swing) is observed. Such a highly energy efficient synapse w

Author

Shrivastava, Shalini; Chavan, Tanmay; Ganguly, Udayan

Published

2019

Language

EN