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Power connectivity for SRAMs

Terry2000

Hello,

Used Encounter successfully on a number of projects but always only with the standard cell library. I want to use some Faraday SRAMs which I've built and integrated into the flow, I'm a little unsure how to connect the power rails up, any help would be appreciated, detail below:   

 

  1.  

    1. Digital core uses M1 and M2 for power rings which are connected to standard cell grid using SRoute

    2. Faraday memory can be built with:

      1. Ringless model

      2. Ring shape model

      3. Port model

    3. Metal layer options for Ringshape model

      1. 2233

      2. 3322

      3. 2244

      4. 4422

      5. 3344

      6. 4433

    4. I’ve built the memories as “Ring shape model” with the power metal option “2233” so the memory power rings are on Metal 2 and Metal 3.  SRoute connects the standard cell grid but I’m unsure how to hook-up the power to the memories.

    5. Was I correct in building the memories with rings?

    6. How do you hook up the power, using SRoute?

Parents
  • i think ringless is more prevalent these days, but you should be able to connect to the ram rings when you add stripes. the rings can be a termination point for the stripes. this would be with addStripe, not sroute.
Reply
  • i think ringless is more prevalent these days, but you should be able to connect to the ram rings when you add stripes. the rings can be a termination point for the stripes. this would be with addStripe, not sroute.
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