ece734 project presentation conditioned reflex mimic circuit design
DESCRIPTION
ECE734 Project Presentation Conditioned Reflex Mimic Circuit Design. Gengyu Yang 2013.5.10. Outline. Introduction Digital Circuit Design Circuit Design Using RRAM Comparison and Discussion Conclusion. Outline. Introduction Pavlov’s dog RRAM and memristor Digital Circuit Design - PowerPoint PPT PresentationTRANSCRIPT
ECE734 Project Presentation
Conditioned Reflex Mimic Circuit Design
Gengyu Yang2013.5.10
Outline
• Introduction
• Digital Circuit Design
• Circuit Design Using RRAM
• Comparison and Discussion
• Conclusion
Outline
• Introduction Pavlov’s dog
RRAM and memristor
• Digital Circuit Design
• Circuit Design Using RRAM
• Comparison and Discussion
• Conclusion
Introduction – Pavlov’s dog• Ivan Petrovich Pavlov was a famous
Russian physiologist• Pavlov's dog are classical
conditioning experiments using dogs by the Russian physiologist Ivan Pavlov
Introduction – Pavlov’s dog
• Three phases of the experiment• (1) before learning phase: the output of the circuit, which will be used to
simulate the strength of salivation, will generate value only associated with the food visual input signal but not with the ringing bell sound input signal.
• (2) learning phase: when a bell was rung in subsequent time with food being presented to the dog in consecutive sequences, the dog will initially salivate when the food is presented. The dog will later come to associate the ringing of the bell with the presentation of the food and salivate upon the ringing of the bell.
• (3) after learning phase: the output of the circuit will generate value associated with both the food visual input signal and the ringing bell sound input signal.
Introduction – RRAM & Memristor
• RRAM, a kind of novel memory
• small area, non-volatile, simple MIM crossbar structure, fast switching, low power consumption, compatibility with CMOS process, simple fabricating process
• Multilevel -- memristor
17 RRAM memories under atomic force microscope
Outline
• Introduction
• Digital Circuit Design
• Circuit Design Using RRAM
• Comparison and Discussion
• Conclusion
Simple version
Simple version
Circuit with food weight update
Circuit with food weight update
Circuit with inhibitory mechanism
Circuit with food weight update
Outline
• Introduction
• Digital Circuit Design
• Circuit Design Using RRAM
• Comparison and Discussion
• Conclusion
Simple version
Simple version
Complex version
Outline
• Introduction
• Digital Circuit Design
• Circuit Design Using RRAM
• Comparison and Discussion
• Conclusion
Area
a positive edge trigged 1 bit D flip-flop
Analog circuit:9 transistors2 resistances2 RRAM devicesTotal: the same area as 9 transistors
Digital circuit:2 1-bit D flip flop, 48 transistors2 adders: OR gate, 8 transistors2 multipliers: AND gate, 8 transistorsAND gate: 4 transistorsTotal: 68 transistors
Non-volatile memory & power consumption
• RRAM: non-volatile, pJ/spike (biological competitive)
• Digital circuit: needs to introduce other memory system to implement non-volatile memory, power problem
Outline
• Introduction
• Digital Circuit Design
• Circuit Design Using RRAM
• Comparison and Discussion
• Conclusion
Conclusion
• Implement conditioned reflex mimic circuit• 3 versions of digital circuit• 2 versions of circuit using RRAM• Circuits using RRAM have better performance
regarding area, non-volatile memory, and power consumption
Thank you!&
Questions?