How to Tapeout a Chip: First Silicon Checklist

Answer block: To tapeout a chip, a team must align process choice, PDK access, design implementation, verification, DRC/LVS, pad ring, package assumptions, test plan and commercial route. First silicon is not just uploading GDS. For MPW, the first MST intake should use a non-confidential brief so process fit and partner route can be screened before any design IP is shared.

New chip teams often search “how to tapeout a chip” after they already have a schematic, RTL, layout or prototype idea. The tapeout path is broader than design files. It is an engineering release process that connects design, foundry rules, packaging, test and commercial access.

Step 1: Choose the process family before the node

A node number alone is not enough. A 180nm logic shuttle, 180nm BCD option, RF process and high-voltage mixed-signal route are not interchangeable. Start with the circuit requirement: supply voltage, analog precision, RF frequency, device options, memory need, IO, sensor interface and package constraints.

Step 2: Confirm PDK and NDA path

Serious tapeout work needs the correct process design kit and design rules. Some programs publish open educational flows; many partner routes require NDA and confirmed eligibility before PDK access. A first RFQ can start without GDS, but a real tapeout cannot proceed without the right rules and signoff path.

Step 3: Build the design with signoff in mind

Design entry, simulation, synthesis, place-and-route, custom layout, IO planning and pad ring choices all affect final release. For first silicon, do not treat verification as the last week of work. DRC, LVS, ERC, antenna rules, density checks, latch-up, ESD and reliability assumptions can affect whether a design is accepted.

Step 4: Prepare GDS/OASIS handoff discipline

The final handoff is usually layout data plus a clear manifest: process, top cell, units, layer map, signoff status, excluded cells, known waivers, checksum, date and owner. For non-confidential preparation, use the Local GDSII Inspector to inspect file structure in the browser without uploading design IP.

Step 5: Do not forget package and test

First silicon is useful only if the team can power it, probe it, package it or test it. Package selection, bond pads, pinout, wafer probe, dicing, sample count and logistics should be scoped before quotation. Read MPW Packaging, Wafer Probe and Test: Specify Early.

First-silicon readiness checklist

• Node range and process family defined.
• PDK access path known or being coordinated.
• EDA flow and signoff tools identified.
• Pad ring and IO plan documented.
• DRC/LVS status and waiver policy clear.
• Package, probe and sample assumptions written down.
• Non-confidential RFQ brief prepared.

FAQ

Can I tapeout with open-source EDA tools?

Some educational and open-source shuttle paths support open flows. Many commercial mature-node routes still require partner-specific PDK, rule decks and signoff expectations. Treat the flow as part of route selection.

Do I need GDS before contacting MST?

No. The first contact should be high-level and non-confidential. GDS comes later only after NDA, PDK and partner route are confirmed.

What is the biggest first-tapeout mistake?

Assuming tapeout is a file upload. In practice, it is a coordinated engineering release across process, rules, package, test and commercial access.

Use this checklist with the MPW shuttle guide and the MST MPW coordination page.

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