High-Quality, Low-Cost IC Fabrication with MOSIS
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Transcript High-Quality, Low-Cost IC Fabrication with MOSIS
Project Submission
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How to work with MOSIS
Unsponsored usage – PO based
• MOSIS customer agreement
• IBM processes – IBM CDA, DKLA
• Artisan libraries – Artisan agreement
Sponsored usage – MEP
• Instructional accounts – class list
• Research accounts - proposal
• Individual NDA, disclosure list
Accounts are per professor
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IP protection
IP protection is critical to access to fabrication for
universities
Each professor is directly responsible for maintaining
the confidentiality of proprietary information obtained
from MOSIS
The professor will be held accountable for any
disclosure violation by anyone involved with the project
(associated faculty or staff, and students)
Each professor responsible for a MOSIS account will
control access to MOSIS vendors’ documents
NO PERSON working with the professor may be
granted access without first signing the "Statement
Acknowledging Responsibility To Protect Proprietary
Material" – Professor to maintain disclosure list
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Issues to be aware of
PO based submissions
• CMP issues are critical, especially for IBM processes
• Run schedule is very tight
– Delays for late projects are next to impossible
MEP submissions
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In addition to the above
Proposals are needed at least 3 weeks in advance
Artisan instantiation needed 1 week in advance
Proposal acceptance does not guarantee space on a
run – designs included on space available basis
IBM processes have more space
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Standard Data Preparation
Project
Check
• Checks design syntax
• Checks layer names
• Computes the size, counts the pads
· Checks actual values with declared values
• DRC available (optional)
Data Prep
• Sizing, logical operations (inc. OPC)
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General Questions
IMPORTANT: Get the GDS file into the
system properly, not as an attachment to
an e-mail (please: NEVER do this)
MOSIS does not require a seal on the
edge of your design
• MOSIS will install a seal ring which is part of
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the definition of the scribe lines for the reticle
This ring will not necessarily be in close
proximity to your layout,
– If you want a "guardring“ for whatever reasons (of
your own), then you should draw it yourself
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Compatible Design Libraries
Artisan
• Commercial Firms
– Free Digital Libraries, I/Os & Memories
– TSMC 0.25µ, 0.18µ; IBM 0.18µ, 0.13µ processes
– Supports Commercial EDA tools: Cadence,
Mentor, Synopsys/Avant!
• Universities
– Complete front end views of core & I/O cells
Behavioral, synthesis, simulation, P&R
No access to GDS, MOSIS Instantiates the
cells
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Artisan Instantiation
Library information needed for std cells, IOs,
memory instances to generate complete GDS
Example details – user to provide
• TSMC C025G (0.25um Baseline) SAGE
Standard Cell Library, library "sc" Version
"2000q2v0“
• TSMC Linear I/O Library, library "tpz873nez"
version "230b"
• TSMC 025 High-Density Single-Port SRAM
Generator (6T 10.95um^2 Cell), generator
"SRAM-SP-HD" version "2002q1v2“
• Also provide memory generator ‘.spec’ file
generated by front-end compiler
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Design Rule Checking
The design rules which must be followed are posted in the form of
DRC decks and Design Rule documents (MOSIS secure doc.
server)
• MOSIS cannot possibly tell you that violating those rules is safe
MOSIS routinely uses DRACULA for TSMC 0.25, BUT moving to
Mentor Graphics' "Calibre" for more advanced technologies
DRACULA works well enough for DRC and antenna checking
• For checking connectivity, MOSIS prefers the Calibre LVS deck,
• Since the DRACULA decks do not handle MiM metals correctly,
this is critical when checking for shorts
Be sure and select the proper variants of the DRC decks;
• For example, if you are using thick-top-metal, there is a special
set of thick-top-metal decks
• If you are using mixed-mode features such as MiM, or strange
threshold devices etc., use the mixed-mode decks etc.
Important, no two tools ever give the same flags for the same layout
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Design Flows - Digital
Digital flow
• Synthesis to place and route
• Standard cells and memory generators
IP elements
• Artisan std cells, IOs, memories
• Virage Logic memory generators
CAD tools
• Cadence place and route
• Mentor verification
• Synopsys synthesis
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Design Flows – Mixed Signal
Mixed-signal flow
• Schematic capture, simulation
• Link to digital flow
CAD tools, design kits
• Agilent ADS models (link to Cadence)
• Cadence - PDK (Process Design Kit)
• Paragon – FDK (Foundry Design Kit)
• Tanner – TDB (Tanner DataBase)
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Design Flows – Full Custom
Full custom flow
• Layout design rules, process parameters,
SPICE models
CAD tools, design kits
• Cadence – e.g. NCSU design kit
• Mentor – e.g. ASIC design kit
• Other – IC Editors, Laytools, LASI,
Electric, Magic
IP – SCMOS std cells, pads
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IBM 0.13µ
Logic process - 8SFG
• Artisan libraries – std cells , pads, memory gen.
• Cadence P&R, Mentor verification
• 8 metal layers, 2-thick (M1, M2, M3, M4, M5, M6,
MQ, LM) – all copper
Mixed-signal process - 8RF (8SFG base)
• Cadence Analog Artist design kits
• Schematic capture, simulation (w/ Agilent ADS
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models)
8 (Cu, Al) metal layers (M1, M2, M3 [3 thin], MG,
MQ [2 thick], LY, E1, MA [3 RF])
Supply voltages are 1.2V core; 2.5V I/O
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IBM 0.18µ
Logic process – 7SF
• Artisan libraries – std cells , pads, memory gen.
• Cadence P&R, Mentor verification
• 8 metals, (M1, M2, M3, M4, M5, LM) – all copper
Mixed-signal process – 7RF
• Cadence Analog Artist design kits
• Schematic capture, simulation (w/ Agilent ADS
models)
SiGe process – 7WL
• 7RF CMOS base plus SiGe (Ft 60 Ghz, Fmax 70
Ghz)
Supply voltages are 1.8V core; 3.3V I/O
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Assembly
Plastic
• Large portfolio
• BGAs – 144 to 456
• QFN – 8 to 64
• QFP – 44 to 256
• TQFP – 32 to 208
Ceramic
• DIP 28, 40
• PGA 65, 84, 108, 121, 132, 145, 181, 209, 257, 391
• LCC 28, 52, 84
Flip-chip bumping
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