Breaking News
Comments
Newest First | Oldest First | Threaded View
resistion
User Rank
CEO
re: Alternative NVM technologies require new test approaches, Part 1
resistion   11/17/2012 12:23:45 AM
NO RATINGS
When you have a resistance-based memory like PCM or STT MRAM and it needs to scale to lower currents, there don't seem to be any chip array testers (not individual cell probes) that can go down to nano amps for read currents. Hope this situation will change.

Kristin Lewotsky
User Rank
Blogger
re: Alternative NVM technologies require new test approaches, Part 1
Kristin Lewotsky   11/16/2012 11:13:35 PM
NO RATINGS
Good catch, Ron -- the axes labels on Figure 7 were indeed transposed; look for a corrected version to appear shortly. Kristin

R G.Neale
User Rank
Rookie
re: Alternative NVM technologies require new test approaches, Part 1
R G.Neale   11/15/2012 9:29:23 AM
NO RATINGS
Peter did you mean this ""Much like other types of NVM technologies, a PCM cell must be formed before it displays the consistent switching necessary to be a memory element."" While PCM has a number of problems, the need to “form” the device should no longer be necessary. Imagine the problems, cost and time, of forming each bit of an 8G-bit array. Unless the author knows something that we are not being told forming effects should have gone away with the use of the crystallized active material as one electrode in the PCM structure. In the distant past, when PCM devices were fabricated with the active material in the amorphous state then there is a first switching (or forming) pulse. This is because the state of disorder, which determines the threshold voltage, of the as deposited film, differs from that of the same material after the first set/reset cycle, also there may have been some element separation that may have an impact on the value of the threshold voltage. While it is still necessary to empirically establish the optimum operating parameters by an iterative process for each new PCM device structure I think the author may have inadvertently confused that process with a need for forming. Once the optimum operating conditions are established with crystallized active electrodes there should be no need for forming. One other question have the annotations for Current and Voltage been accidentally transposed in Figure 7 or is this a power PCM device??



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

The Best of the Best Videos on YouTube
Max Maxfield
2 comments
A couple of days ago, my chum Paul was visiting me in my office. He'd wandered over from his cubicle in the next bay to take a brief coffee break. This week, Paul had been admiring the ...

Jolt Judges and Andrew Binstock

Jolt Awards: The Best Books
Jolt Judges and Andrew Binstock
1 Comment
As we do every year, Dr. Dobb's recognizes the best books of the last 12 months via the Jolt Awards -- our cycle of product awards given out every two months in each of six categories. No ...

Engineering Investigations

Air Conditioner Falls From Window, Still Works
Engineering Investigations
2 comments
It's autumn in New England. The leaves are turning to red, orange, and gold, my roses are in their second bloom, and it's time to remove the air conditioner from the window. On September ...

David Blaza

The Other Tesla
David Blaza
5 comments
I find myself going to Kickstarter and Indiegogo on a regular basis these days because they have become real innovation marketplaces. As far as I'm concerned, this is where a lot of cool ...