Minor quibble about fixed-performance ASIC

Article: Transistor Count: A Flawed Metric
By: Paul A. Clayton (paaronclayton.delete@this.gmail.com), May 19, 2020 3:59 pm
Room: Moderated Discussions
While a fixed-performance ASIC will, by definition, not benefit from better than adequate performance, yield is reduced by worse than adequate performance. This is not nearly as strong an incentive for higher performance as the premium for high performance bins, but it is a design factor. If parts cannot be binned at all, there would be an incentive for redundancy to increase yield.

SRAM column redundancy does not add much (less than 1% for a 256 column array), but such also introduces a counting variable. The transistor for this redundancy are even less dynamically useful than decaps but in a sense they are "active transistors" — which column (if any) is elided is variable per array.
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TopicPosted ByDate
New article: Transistor count: A Flawed MetricDavid Kanter2020/05/18 07:04 AM
  Non active transistorsDoug S2020/05/18 02:26 PM
    Non active transistorsRicardo B2020/05/18 09:12 PM
  Minor quibble about fixed-performance ASICPaul A. Clayton2020/05/19 03:59 PM
    Minor quibble about fixed-performance ASICDavid Kanter2020/05/21 06:58 AM
  A complementary article about xtor densityPaul A. Clayton2020/06/02 07:07 AM
    Low leakage transistorsDavid Kanter2020/06/02 07:53 AM
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