Conditioned Reflex Mimic Circuit Design

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Nov 2, 2013 (4 years and 5 days ago)

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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


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 transistors

2 resistances

2 RRAM devices

Total: the same area as 9 transistors

Digital circuit:

2 1
-
bit D flip flop, 48 transistors

2 adders: OR gate, 8 transistors

2 multipliers: AND gate, 8 transistors

AND gate: 4 transistors

Total: 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