Embedded Systems Conference
Breaking News
News & Analysis

Report: Magnetic RAM Set for 50% CAGR

4/22/2014 10:40 AM EDT
13 comments
NO RATINGS
1 saves
More Related Links
View Comments: Newest First | Oldest First | Threaded View
<<   <   Page 2 / 2
resistion
User Rank
Author
Not practical
resistion   4/22/2014 5:49:07 PM
NO RATINGS
STT MRAM too expensive to replace DRAM. Also, read disturb has not been resolved to the degree needed for frequent accesses.

tb100
User Rank
Author
Re: In the future, why both?
tb100   4/22/2014 5:05:18 PM
NO RATINGS
I've never understood the positioning of these new persistent memory technologies as a replacement for RAM. Isn't it good enough that they are a replacement for Flash? By saying that they can replace RAM, you are setting up a good technology for failure.

Here's why: RAM has to have infinite read/write capability. Not millions, not even billions, but infinite. RAM can be written to very quickly. If it has a 100ns cycle, then you can write 100 million times in 10 seconds. Writing to one location may not be something that is done often, but all it takes is one time, (maybe some weird encryption, compression, or even Bitcoin algorithm that reuses one memory block over and over again), and the memory is dead in the water.

Let's set the goal post a little lower so these memories have a chance.

 

edit add: did some searching, and one MRAM company, Everspin, claims no wear-out mechanism, or infinite read/write capability, so I guess at least MRAM can replace RAM.

 

CC VanDorne
User Rank
Author
In the future, why both?
CC VanDorne   4/22/2014 3:05:27 PM
NO RATINGS
"Meanwhile MRAM and STT MRAM will start to replace SRAM and DRAM within the next few years and probably before RRAM replaces flash memory."

Why would I need both?  That is if DRAM/SRAM's replacement is persistant why would a CPU system have any need of other persistent storage, i.e Flash's future substitute?  Or conversely, if Flash's future substitutes has DRAM-quick write speeds why would a CPU have any need of DRAM's future substitute?  It seems like the future merges the two functions by solving the technical challenges that led to them being seperate in ther first place.

<<   <   Page 2 / 2
Most Recent Comments
Stargzer
 
Or_Bach
 
Stargzer
 
Doug_S
 
Gustavo Litovsky
 
Gustavo Litovsky
 
Pablo Valerio
 
Stargzer
 
Stargzer
Flash Poll
April 2015 Cartoon Caption Contest: The Mighty Hamster
April 2015 Cartoon Caption Contest: The Mighty Hamster
Of all the exhibits in the Pre-Apocalypse Era Museum, Breek was always in awe of the unearthed details and true-to-scale reproduction of a technological creation space that the long gone humans had once inhabited.
138 comments
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Times on Twitter
EE Times Twitter Feed
Top Comments of the Week