Design Con 2015
Breaking News
Blog

Winbond at a Crossroads

NO RATINGS
Page 1 / 2 Next >
View Comments: Newest First | Oldest First | Threaded View
resistion
User Rank
CEO
Re: NAND 's burden
resistion   11/20/2013 8:13:25 PM
NO RATINGS
The controller is a large hidden cost for NAND flash. Anyone figured this out yet?

Peter Clarke
User Rank
Blogger
Re: NAND 's burden
Peter Clarke   9/13/2013 5:58:51 AM
NO RATINGS
Yes 

Clearly at the leading edge, MLC NAND flash requires extensive ECC and also a controller that will keep moving data on so that all the memory cells get similar wear....as they can only do a limited number of read/write cycles and ECC to correct for altered bits adds to the wear.

One implication of this "wear leveling" is that at the extreme the effective capacity of a leading-edge NAND flash memory reduces over time.

I am not sure whether the manufacturers provide additional capacity so that the memory "wears down" toward the advertized capacity ...or they produce what they produce and reckon it is down to the controller to "manage" the situation.

resistion
User Rank
CEO
NAND 's burden
resistion   9/12/2013 6:56:18 AM
NO RATINGS
A lot of ECC, probably.

rick merritt
User Rank
Author
Winbond
rick merritt   9/10/2013 9:21:09 AM
NO RATINGS
Boy, there's a name I haven't heard in awhile!

Radio
LATEST ARCHIVED BROADCAST
EE Times Senior Technical Editor Martin Rowe will interview EMC engineer Kenneth Wyatt.
Top Comments of the Week
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
Flash Poll