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Altera_Forum's avatar
Altera_Forum
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21 years ago

SDRAM Interface to SO-DIMM?

I'm planning a NiosII design and we need a pile of RAM but don't need the high bandwidth of SRAM. It's hard to find SDRAM chips in stock, given their commodity nature, and so I was looki...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

I think you'll be able to get SDRAM SO-DIMM's for a very long time. Common sense says they would be available much longer than any single chip you'd pick. Our board that's been shipping for 4+ years (design started 5+ years ago) still uses 72 pin EDO SIMMs.

It's not that much trouble to get them and they are $5-$10 for 16-32MB stick.

I agree that DDR would be an even better choice if you can develop the controller. The Twister Cyclone dev board on www.fpga.nl has DDR, but not in a socket. It may come with a controller that is close?

I know I&#39;d like to have either one for a future board spin http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/smile.gif

Ken