Hi Pallav,

I have submitted two projects to MOSIS with the same process (C5) you are
using. I used the MOCMOS technology for MOSIS in Electric, not SCMOS. Hope
that helps.

Lincoln

-----Original Message-----
From: [email protected] [mailto:[email protected]]
On Behalf Of pallav
Sent: Thursday, December 10, 2009 12:36 PM
To: Electric VLSI Editor
Subject: Design fails MOSIS manufacturability review

Hi,

We are trying to submit a design to MOSIS done on Electric for AMI C5
process (feature size 0.6, lambda 0.35 (http://www.mosis.com/on_semi/
c5/)) using SCMOS rules. I have ran DRC, ERC, NCC checks on the final
chip layout and everything passes. We uploaded the design to MOSIS and
it failed manufacturability review. The exact errors + requested setup
are shown below.

Does anybody have any ideas how to fix this in Electric? Since we are
using default rules setup in Electric, we haven't changed any sizes
(except make metal1/metal2 have widths of 4 as opposed to 3).

I'll upload the file incase anyone wants to take a quick look and
comment. The zip file will be booth-multiplier.zip.

I'll also get in touch with MOSIS to see if they can provide some more
information

Thanks for any ideas.

Project Errors:

  Undersized CONTACT features (approx 37744) detected

  Undersized VIA features (approx 8044) detected

  Undersized VIA2 features (approx 11900) detected

Project Warnings:

  You have authorized MOSIS to add fill to your project to meet
     minimum layer density requirements. Adding fill could
     affect the functioning of your design (see
     http://www.mosis.com/Faqs/faq-design.html#7.0)

Project Status:

  Design 82670 status: FAILED
  Design name: 8-Bit Booth Multiplier
  Technology: SCN3M, lambda = .35
  Fabrication restricted to AMI only.
  Fill to be added: by MOSIS
  This project can be fabricated on a AMI_C5F run.
  POLY layer drawn density (1.6%) plus estimated fill (10.8%)
     meets the AMI_C5F minimum required (12.0%).
  METAL1 layer drawn density (6.0%) plus estimated fill (27.0%)
     meets the AMI_C5F minimum required (30.0%).
  Run date requested: 18-JAN-2010
  Layout format: GDS
  Top or root structure is "chip".
  Layout file: complete; Binary CRC checksum: 2294847872, 643072
  Intended disposition: RESEARCH
  Bonding pads: 40
  Layout size: 1467 x 1467 microns; area: 2.152 sq millimeters
  Layers found (and densities): CONTACT, P_WELL, N_WELL, ACTIVE,
     P_PLUS_SELECT, N_PLUS_SELECT, POLY (1.6%), METAL1 (6.0%),
     VIA, METAL2 (36.7%), GLASS, VIA2, METAL3
  Requested quantity: 5
  Requested packaging: DIP40 [MOSIS generated bonding diagram]
     (5 parts)
  Maximum die size: 7620 x 7620

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