3 ms·

Depends on the use case but yes I'd agree, 50 might be a tad too long. I work in IoT and industrial computing and the specifications can be for 25+ years howeve

• tw04 5y ago
  >I work in IoT and industrial computing and the specifications can be for 25+ years however, so it's not unheard of. 25+ years isn't unheard of, but "in any capacity" absolutely is. There's no foundry on this planet that is continuing to produce you CPUs 25 years from now if your batch size is an order of 50 units.
  • zozbot234 5y ago
    There's plenty of foundries cheaply fabbing chips in "obsolete" process nodes. If the original design from 25+ years ago is available, there's no reason why it couldn't be fabbed today in those quantities.
    • rbanffy 5y ago
      Also, while I wouldn't want to redesign (and, Heaven forbid, recertify it with the authorities) the board and software, I wouldn't mind having a part done in a more power efficient way, as long as it's pin-compatible with the old one and done in a way similar enough no recertification is needed.
      • sitkack 5y ago
        This is doable, it is impossible right now, but given enough time, quite probable that one could take an old design, and move it to a new PDK and have it automatically adjusted to meet the same timing and power constraints. If only one could take the GDSII for an old process node and just make it smaller. Maybe someone will make a model that does that, just contracts images of polygons. :) It would require not only the tooling but also past test runs of all of the verification passes to confirm that the new design doesn't have a flaw.
  • reportingsjr 5y ago
    Rochester Electronics disagrees with you! You just have to have some deeeeep pockets for it.