Design Con 2015
Breaking News
Comments
Newest First | Oldest First | Threaded View
<<   <   Page 2 / 2
resistion
User Rank
CEO
re: IEDM: Hynix takes NAND to 15-nm
resistion   9/18/2011 1:29:46 PM
NO RATINGS
Dr. Neale, thanks for the info. Many attempts to bring PCM retention to a higher level by using a material other than GST have fallen short. We also have to remember the high resistance state decreases resistance with temperature.

rbtbob
User Rank
Rookie
re: IEDM: Hynix takes NAND to 15-nm
rbtbob   9/18/2011 9:11:25 AM
NO RATINGS
Regarding the Hynix patent app. The first AgLnSbTe is likely a typo. Paragrapgh 0036 under Detailed description reads AgInSbTe. You had me looking to see if there was an indication of which Lanthanide they were using. There is some research that suggests doping the chalcogenide with various of the Lanthanides will mitigate the problems with thermal stress and migration.

R G.Neale
User Rank
Rookie
re: IEDM: Hynix takes NAND to 15-nm
R G.Neale   9/17/2011 8:08:01 AM
NO RATINGS
Resiston –Ahead of the IEDM 2011 paper your reservations re PCM elevated temperature data retention might find an answer in a recent patent application from Hynix (US2011/0193046A1). As well as the usual broad-brush material composition claims, one material composition is cited as of particular interest, AgLnSbTe. That same patent also discloses a matrix isolation fabrication technique using an SOI structure, allowing two diodes in parallel to share the reset current and so alleviates the current density problem in the silicon. The need for this suggests the current density in the PCM cell remains high. For me this raises the question as to the immunity of any new material from element separation associated with high current density and electrochemical effects. To be credible the claimed elevated temperature (200C for 10 Years) will need to be supported by solid evidence as a function of write/erase lifetime and in a fully processed device matrix. The language of the abstracts “describe a complete technology platform” and data published to date suggests that this 1G-bit device may be relegated to demonstration status rather than announced as a commercial product; as the three 1G-bit PCMs (Numonyx/Micron/Samsung) that have gone before. IEDM 2011 and post-IEDM will be an interesting time for PCM followers.

resistion
User Rank
CEO
re: IEDM: Hynix takes NAND to 15-nm
resistion   9/16/2011 10:42:40 PM
NO RATINGS
Interestingly only one NAND cell is discussed not an array.

resistion
User Rank
CEO
re: IEDM: Hynix takes NAND to 15-nm
resistion   9/16/2011 5:00:09 PM
NO RATINGS
Impressed by 15 nm, since this inaugurates multiple patterning. But I don't quite buy the PCRAM data retention claim.

<<   <   Page 2 / 2


Flash Poll
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

Want to Present a Paper at ESC Boston 2015?
Max Maxfield
1 Comment
I tell you, I need more hours in each day. If I was having any more fun, there would have to be two of me to handle it all. For example, I just heard that I'm going to be both a speaker ...

Martin Rowe

No 2014 Punkin Chunkin, What Will You Do?
Martin Rowe
Post a comment
American Thanksgiving is next week, and while some people watch (American) football all day, the real competition on TV has become Punkin Chunkin. But there will be no Punkin Chunkin on TV ...

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
9 comments
As every developer knows, there are the paper specifications for a product design, and then there are the real requirements. The paper specs are dry, bland, and rigidly numeric, making ...

Martin Rowe

Book Review: Controlling Radiated Emissions by Design
Martin Rowe
1 Comment
Controlling Radiated Emissions by Design, Third Edition, by Michel Mardiguian. Contributions by Donald L. Sweeney and Roger Swanberg. List price: $89.99 (e-book), $119 (hardcover).