Putting Memory In Circuits: Memdevices
This document was uploaded by user and they confirmed that they have the permission to share it. If you are author or own the copyright of this book, please report to us by using this DMCA report form. Report DMCA
Overview
Download & View Putting Memory In Circuits: Memdevices as PDF for free.
More details
- Words: 749
- Pages: 26
PUTTING MEMORY IN CIRCUITS: MEMDEVICES SEMINAR GUIDE Mr. PRIYADARSHI SURAJ LECTURER [E&C]
PRESENTED BY TIMIR SHEEL 0608231114
CONTENTS
FUNDAMENTAL ELEMENTS
MEMORY IN CIRCUITS
NEW ELEMENTS IN SCENE
CONCLUSION
12/03/09
2
FUNDAMENTAL ELEMENTS RESISTOR: It is a two-terminal electronic component In accordance with Ohm's law: V = I x R Measure of its opposition to the passage of a steady electric current.
12/03/09
3
FUNDAMENTAL ELEMENTS CAPACITOR:
Consists of a pair of conductors Ability to store electrostatic energy
q C= V
CAPACITANCE: The ability of a body to hold an electrical charge
12/03/09
4
FUNDAMENTAL ELEMENTS INDUCTOR: An inductor is a conducting wire shaped as a coil Ability to store magnetic energy Φ L = I INDUCTANCE: Measure of the amount of EMF
generated per unit change in current. v v v
12/03/09
5
MEMORY IN CIRCUITS Postulated by Prof L. Chua in 1971 A general class of nth-order memory devices y(t) = g (x, u, t) u(t) = f (x, u, t) x&
In general are of three types: Memristive Systems Memcapacitive Systems Meminductive Systems
12/03/09
6
MEMRISTIVE SYSTEMS DEFINITION: An nth-order current controlled memristive system : VM (t) = R(x, I, t) I(t) = f (x, I, t) x& PROPERTIES: These devices are passive “No energy discharge property” System shows a “pinched hysteretic loop”. Behaves as a non-linear resistor in the limit of zero freq.
12/03/09
7
MEMRISTIVE SYSTEMS
x&
Simulation of a voltage-controlled memristive system 12/03/09
8
MEMCAPACITIVE SYSTEMS DEFINITION: An nth-order voltage-controlled Memcapacitive system q (t) = C (x, VC, t) VC(t)
= f (x, VC, t)
x&
PROPERTIES:
This device can store energy The system is
A pinched hysteresis loop of a memcapacitive system €Passive if U1 + U2 = 0, €Dissipative if U1 + U2 > 0 and € Active if U1 + U2 < 0.
12/03/09
9
MEMCAPACITIVE SYSTEMS
Simulation of a circuit (shown in the inset of (a)) composed of a voltage-controlled memcapacitive system
12/03/09
10
MEMINDUCTIVE SYSTEMS DEFINITION: nth-order current-controlled meminductive system Φ (t) = L (x, I, t) I(t) = f (x, I, t) x& PROPERTIES: The device can store energy The energy stored in the current-controlled meminductive system t
UL( t)= ∫
to
τVL( ) τI( ) dτ
t
dI dtot
dL =L ∫ dt
12/03/09
I
I+( ) d 11
MEMINDUCTIVE SYSTEMS EXAMPLE The simplest way to introduce a memory effects in such a system is to use the core material whose response to the applied magnetic field depends on its history.
12/03/09
12
NEW ELEMENTS IN SCENE
System of fundamental passive memory-less and memelements 12/03/09
13
NEW ELEMENTS IN SCENE MEMRISTOR A memristor is a two-terminal device whose resistance depends on the magnitude and polarity of the voltage applied to it and the length of time that voltage has been applied
An array of 17 purpose-built oxygen-doped titanium dioxide memristors 12/03/09
14
NEW ELEMENTS IN SCENE MEMRISTOR It’s a device which changes its resistance depending upon how much electrical charge flow through them.
Symbolic Representation of Memristor
12/03/09
15
NEW ELEMENTS IN SCENE
System of fundamental passive memory-less and memelements 12/03/09
16
NEW ELEMENTS IN SCENE MEMCAPACITOR Memcapacitor is contraction of “memory capacitor". Its a capacitance with memory, in which the capacitor remembers how much charge was stored in it. §
An array of Memcapacitors arranged on IC 12/03/09
17
NEW ELEMENTS IN SCENE MEMCAPACITOR There is a significant difference between this new devices and the memristor: unlike the latter, a memcapacitor can store energy. A memcapacitor could store data without dissipating any energy at all §
Symbolic Representation of Memcapacitor
12/03/09
18
NEW ELEMENTS IN SCENE
System of fundamental passive memory-less and memelements 12/03/09
19
NEW ELEMENTS IN SCENE MEMINDUCTOR In this device, the inductance depend on the state and history of the system. Its an inductor with memory; a structure whose inductance increases up to a certain value when current flows in one direction and decreases down to another value if the current flow direction is reversed
12/03/09
20
NEW ELEMENTS IN SCENE MEMINDUCTOR
Symbolic Representation of Meminductor
12/03/09
21
MEMORY HOW? VS(t)
Batter y
φ E
E 0
t
0
t
q
φ 12/03/09
22
NEW ASPECTS OF MEMDEVICES Spin memristive systems: Spin memory effects in semiconductor spintronics New ”Mem-devices” Could Make Computers work like Human Brains Memristors Make Chips Cheaper Memristor minds :The future of artificial intelligence
12/03/09
23
CONCLUSION
12/03/09
24
THANK YOU
12/03/09
25
QUERIES !!!
12/03/09
26
PRESENTED BY TIMIR SHEEL 0608231114
CONTENTS
FUNDAMENTAL ELEMENTS
MEMORY IN CIRCUITS
NEW ELEMENTS IN SCENE
CONCLUSION
12/03/09
2
FUNDAMENTAL ELEMENTS RESISTOR: It is a two-terminal electronic component In accordance with Ohm's law: V = I x R Measure of its opposition to the passage of a steady electric current.
12/03/09
3
FUNDAMENTAL ELEMENTS CAPACITOR:
Consists of a pair of conductors Ability to store electrostatic energy
q C= V
CAPACITANCE: The ability of a body to hold an electrical charge
12/03/09
4
FUNDAMENTAL ELEMENTS INDUCTOR: An inductor is a conducting wire shaped as a coil Ability to store magnetic energy Φ L = I INDUCTANCE: Measure of the amount of EMF
generated per unit change in current. v v v
12/03/09
5
MEMORY IN CIRCUITS Postulated by Prof L. Chua in 1971 A general class of nth-order memory devices y(t) = g (x, u, t) u(t) = f (x, u, t) x&
In general are of three types: Memristive Systems Memcapacitive Systems Meminductive Systems
12/03/09
6
MEMRISTIVE SYSTEMS DEFINITION: An nth-order current controlled memristive system : VM (t) = R(x, I, t) I(t) = f (x, I, t) x& PROPERTIES: These devices are passive “No energy discharge property” System shows a “pinched hysteretic loop”. Behaves as a non-linear resistor in the limit of zero freq.
12/03/09
7
MEMRISTIVE SYSTEMS
x&
Simulation of a voltage-controlled memristive system 12/03/09
8
MEMCAPACITIVE SYSTEMS DEFINITION: An nth-order voltage-controlled Memcapacitive system q (t) = C (x, VC, t) VC(t)
= f (x, VC, t)
x&
PROPERTIES:
This device can store energy The system is
A pinched hysteresis loop of a memcapacitive system €Passive if U1 + U2 = 0, €Dissipative if U1 + U2 > 0 and € Active if U1 + U2 < 0.
12/03/09
9
MEMCAPACITIVE SYSTEMS
Simulation of a circuit (shown in the inset of (a)) composed of a voltage-controlled memcapacitive system
12/03/09
10
MEMINDUCTIVE SYSTEMS DEFINITION: nth-order current-controlled meminductive system Φ (t) = L (x, I, t) I(t) = f (x, I, t) x& PROPERTIES: The device can store energy The energy stored in the current-controlled meminductive system t
UL( t)= ∫
to
τVL( ) τI( ) dτ
t
dI dtot
dL =L ∫ dt
12/03/09
I
I+( ) d 11
MEMINDUCTIVE SYSTEMS EXAMPLE The simplest way to introduce a memory effects in such a system is to use the core material whose response to the applied magnetic field depends on its history.
12/03/09
12
NEW ELEMENTS IN SCENE
System of fundamental passive memory-less and memelements 12/03/09
13
NEW ELEMENTS IN SCENE MEMRISTOR A memristor is a two-terminal device whose resistance depends on the magnitude and polarity of the voltage applied to it and the length of time that voltage has been applied
An array of 17 purpose-built oxygen-doped titanium dioxide memristors 12/03/09
14
NEW ELEMENTS IN SCENE MEMRISTOR It’s a device which changes its resistance depending upon how much electrical charge flow through them.
Symbolic Representation of Memristor
12/03/09
15
NEW ELEMENTS IN SCENE
System of fundamental passive memory-less and memelements 12/03/09
16
NEW ELEMENTS IN SCENE MEMCAPACITOR Memcapacitor is contraction of “memory capacitor". Its a capacitance with memory, in which the capacitor remembers how much charge was stored in it. §
An array of Memcapacitors arranged on IC 12/03/09
17
NEW ELEMENTS IN SCENE MEMCAPACITOR There is a significant difference between this new devices and the memristor: unlike the latter, a memcapacitor can store energy. A memcapacitor could store data without dissipating any energy at all §
Symbolic Representation of Memcapacitor
12/03/09
18
NEW ELEMENTS IN SCENE
System of fundamental passive memory-less and memelements 12/03/09
19
NEW ELEMENTS IN SCENE MEMINDUCTOR In this device, the inductance depend on the state and history of the system. Its an inductor with memory; a structure whose inductance increases up to a certain value when current flows in one direction and decreases down to another value if the current flow direction is reversed
12/03/09
20
NEW ELEMENTS IN SCENE MEMINDUCTOR
Symbolic Representation of Meminductor
12/03/09
21
MEMORY HOW? VS(t)
Batter y
φ E
E 0
t
0
t
q
φ 12/03/09
22
NEW ASPECTS OF MEMDEVICES Spin memristive systems: Spin memory effects in semiconductor spintronics New ”Mem-devices” Could Make Computers work like Human Brains Memristors Make Chips Cheaper Memristor minds :The future of artificial intelligence
12/03/09
23
CONCLUSION
12/03/09
24
THANK YOU
12/03/09
25
QUERIES !!!
12/03/09
26
Related Documents
Putting Memory In Circuits: Memdevices
July 2020 7
Cmos Memory Circuits
November 2019 14
Cmos Memory Circuits - T. Haraszti.pdf
December 2019 6
Theatre Circuits In Texas
June 2020 3
Circuits
October 2019 37
Circuits
November 2019 39More Documents from ""
Bluetooth 3.0
July 2020 12
Iti Manakapur , Training Report
June 2020 8
Voip
June 2020 5
Low Power Wire Less Sensor Network--ppt
June 2020 5