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is it possible to hook this to the propeller — Parallax Forums

is it possible to hook this to the propeller

softconsoftcon Posts: 217
edited 2013-03-04 17:48 in Propeller 1
I ran across this last week, and although it's dram, and has 50 pins, I was curious if anyone knows how/if something like this could be tied into a propeller design. They sell for less than $1 for quantities of 1, and they're 16MB. Would absolutely love to manage to get something like this talking to the propeller, then I could build a truly stand-alone computer, with speech and anything else I wanted, even possible to port a version of linux to the propeller then. Don't know enough about how this stuff works though, so mention it here for possible education. Anyone have any ideas?
http://www.futureelectronics.com/en/technologies/semiconductors/memory/dram/component-dram/Pages/3026786-AS4C1M16S-7TCN.aspx?IM=0

Comments

  • jmgjmg Posts: 15,183
    edited 2013-03-04 17:48
    softcon wrote: »
    Is it possible to hook this to the propeller

    Sure, almost anything is possible. :)

    The caveats with SDRAM are it is synchronous, which means it needs a fast clock, and it has a Refresh Spec
    * 4096 refresh cycles/64ms

    but it does mention

    * Auto Refresh and Self Refresh

    A prop is going to need to bit-bash the Adr lines, but if you can get it into Auto-refresh mode, and manage to keep above any Minimum specs, there is no reason it would not work, after a fashion.
    It will be operating a long way below the 143MHz specs

    See also
    http://forums.parallax.com/showthread.php/129593-NEW-32MB-SDRAM-Module-for-Propeller-Platform
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