Honored Contributor
Honored ContributorI think you may be much happier with Cyclone V. DDR2 timing can be tricky. If size is not the limit, the U484 package has the full migration range for a 19x19 package.
The only problem with Cyclone V is you need the magic decoder ring to figure out the correct part to buy. You want to make sure you get the variation with the hard memory controllers. The decoder ring is in this document. http://www.altera.com/literature/hb/cyclone-v/cv_51001.pdf Page 5 has the E variation decoder. Based on what you've told me, I would assume you would want the 5CEFA2U19C8N or possibly 5CEFA2U15C8N parts Looking at Arrow, the U15 part may me rare still. I'm only seeing F23 parts in stock right now. http://components.arrow.com/part/search/5cefa2 These are a significant premium over the Cyclone V family members you were looking at, but they are larger devices, 25k vs 6k or 10K LE's. But it should be much easier on timing. Pete
