Breaking News
Comments
Newest First | Oldest First | Threaded View
krisi
User Rank
CEO
re: IBM, Hynix, Samsung roll STT RAM
krisi   12/11/2010 3:51:50 PM
NO RATINGS
Agreed, nice comments from @uhrmannt...is there any place to see cross section of devices in both technologies? Kris

Sanjib.A
User Rank
CEO
re: IBM, Hynix, Samsung roll STT RAM
Sanjib.A   12/11/2010 2:11:29 PM
NO RATINGS
@uhrmannt, thanks a lot for explaining the differences between the two technologies...it helps me a lot! How are the Everspin devices performing in the field? Any idea how reliable they are and any technical advantage the offer compared to traditional semiconductor technology?

uhrmannt
User Rank
Rookie
re: IBM, Hynix, Samsung roll STT RAM
uhrmannt   12/9/2010 11:02:01 AM
NO RATINGS
Indeed Everspin is on the market with MRAM already for a couple of years. However, their technology is highly different to the STT technology, despite relying on the same tunneling magneto resistance (TMR) effect. Everspin uses TMR junctions with a size being in the size of couple of hundred nanometers. These mainly elliptical junctions face that problem that their remagnetization/switching field is increasing largely when shrinked down (where the socalled paramagnetic state marks the fundamental limit). This issue of a increasing switching field in combination with their matrix grid switching (a current pulse is applied to a wire grid, where the wires cross the oersted field superposes to a value high enough to switch the cell underneath) introduce the scaling down border of this technology. For SST the switching is by usage of the spin torque effect. In this case the current density of spin polarized current transversing the tunnel junctions has to be huge in order to reverse or change the magentic state and therefore store the information. Mostly the material issues as well as reliability are stating the issues of this new technology.

resistion
User Rank
CEO
re: IBM, Hynix, Samsung roll STT RAM
resistion   12/8/2010 5:36:16 AM
NO RATINGS
Surprised to hear of disagreement between PMA and IMA. That's going to hinder acceptance a bit.

Sanjib.A
User Rank
CEO
re: IBM, Hynix, Samsung roll STT RAM
Sanjib.A   12/8/2010 3:27:30 AM
NO RATINGS
Everspin (spin-off of Freescale Semiconductor Inc) already has MRAM chips in their product portfolio for quite some time. The density is upto 16Mb for the 16-bit devices. I don't understand the technologies well, but my guess is that the STT-MRAM is a new technology targeted to scale it down, increase its density enough for it to be capable of replacing the DRAM. If I understand correctly, I feel this manufacturers are desperate to overcome the last few hurdles and lunch these products commercially in not more than 2 years. Any different opinion?

krisi
User Rank
CEO
re: IBM, Hynix, Samsung roll STT RAM
krisi   12/7/2010 9:59:42 PM
NO RATINGS
I wonder how long will it take for spin based devices to be used in real products...this will mark a major breakthrough in EE: instead of currents, voltages or charges we will be relying on something quite esoteric as a spin of electron...anyone taking bets how many years to production? Kris



EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Creating a Vetinari Clock Using Antique Analog Meters
Max Maxfield
13 comments
As you may recall, the Mighty Hamster (a.k.a. Mike Field) graced my humble office with a visit a couple of weeks ago. (See All Hail the Mighty Hamster.) While he was here, Hamster noticed ...

EDN Staff

11 Summer Vacation Spots for Engineers
EDN Staff
11 comments
This collection of places from technology history, museums, and modern marvels is a roadmap for an engineering adventure that will take you around the world. Here are just a few spots ...

Glen Chenier

Engineers Solve Analog/Digital Problem, Invent Creative Expletives
Glen Chenier
11 comments
- An analog engineer and a digital engineer join forces, use their respective skills, and pull a few bunnies out of a hat to troubleshoot a system with which they are completely ...

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
45 comments
I'm a big proponent of engineers learning financial basics. Why? Because engineers are making decisions all the time, in multiple ways. Having a good financial understanding guides these ...

Flash Poll
Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)