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What's good about memristors? Who is planning on using them?

Comments(8)Filed under: PCB design, Electronic Engineering Times, memristors
I recently read an interesting article in the August 18, 2008 Electronic Engineering Times magazine titled - "Will memristors prove irresistible?" My brother-in-law who used to work for HP years ago, called me excitedly one evening telling me about this new passive device - it's really cool!
For those who may have not heard about this very unique device, here are some highlights:
  • Invented in 1971 by EE professor Leon Chua at the University of California, Berkeley, this "memory resistor" represents a potential revolution in electronic-circuit theory. The device acts as a variable resistance that "remembers" how much current has flowed through it by changing the voltage across its terminals. Thus, it can serve as a memory element that can be flipped "on", with a current in one direction, and "off" with a current in the reverse direction.
  • It is the fourth passive circuit element after resistors, capacitors and inductors.
  • An HP chemist, Senior Fellow Stanley Williams, developed the academic matter from Leon Chua into an actual circuit element.
  • HP is hoping that resistive random-access memories (RRAMS) will open the floodgates for memristors.
  • The memristor could turn out to be as important development as the transistor itself!
RRAMS are just three times the density of flash memories. HP is also working on crossbar switches (the building blocks of a new memory type they're developing) which are 20 times denser than flash memories. HP is seeing RRAMS as only the beginning for the memristor and that it could be used in neural networks and adaptive control circuits that learn.
Think about the ramifications for PSpice simulations. What about SI analysis?
I'd like to hear from you about if/when you might be using memristors.
Jerry GenPart


By urcuterock on October 15, 2008
Think about the ramifications for PSpice simulations. What about SI analysis?...I think only power mangement might bcome little tougher apart from all the advantages that u mention...its great news and waiting for RRAMS..:)

By Jerry GenPart on October 16, 2008
Hi "urcuterock". Thanks for your comments and I'm glad to see you're waiting for the availability of RRAMS. As far as simulators (Analog - PSPice, Digital - Verilog/VHDL, PCB SI, etc.) they will all need to be updated from both the library model and core simulator perspectives to take advantage of this new device's behavior. It's not difficult, but work will be need to make this available. Jerry GenPart.

By Jerry GenPart on November 26, 2008
For an update, you can read this post in EE Times online - www.eetimes.com/showArticle.jhtml

By Johnny Mak on December 13, 2008
Just to be clear Leon Chua did not actually invent the memristor, but theorized it.

By Anjo C.A. on September 28, 2011
Sir, The article is really good..Sir..Which  meristor model has been used to do the the analysis.I am working on it. Do cadence have a specialized library functions for modelling of it..
Thank you

By Jerry GenPart on September 29, 2011
Hi Anjo -
I'm not positive we have modeled memristors in our tools to this point. For an up to date answer - I'd suggest you contact one of our Allegro PCB SI Customer Support experts and they can provide you an answer.
Jerry G.

By ohileshwari on February 18, 2014
does cadence have a specialized library functions for modelling RRAMS(memrister)

By Jerry GenPart on February 18, 2014
Hi -
I will need to investigate if memristor support is provided in specific analysis tools. You can definitely model the basic part using Part Developer, but it's the electrical aspects I need to research.
Jerry G.

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