google/skywater-pdk

Issues somebody may already be working on are listed last. List everything by date

• PDK for SAR ADC

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  Difficulty 5/5 Over a week Newbie friendliness 8/100

  google/skywater-pdk#451 · Opened Oct 9, 2026

• Device Details tables: FS/SF columns contradict each other (nfet_01v8 Vt row, pfet_01v8 Idsat row)

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  Difficulty 2/5 1-3 hours Newbie friendliness 75/100

  google/skywater-pdk#450 · 2 comments · Opened Oct 6, 2026

• License and provenance of the SKY130 HD TT Liberty file copied in ORFS

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  google/skywater-pdk#449 · 1 comment · Opened Aug 29, 2026

• https://www.facebook.com/profile.php?id=61582767725746

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  Difficulty 1/5 Under an hour Newbie friendliness 1/100

  google/skywater-pdk#445 · 2 comments · Opened Nov 25, 2025

• Problems when dealing with resistors on Xschem and on Magic

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  google/skywater-pdk#444 · 2 comments · Opened May 4, 2025

• Numparam Issue

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  Difficulty 4/5 3-5 days Newbie friendliness 20/100

  google/skywater-pdk#443 · 1 comment · Opened Feb 25, 2025

• GitHub IO hosting failure: website stops loading

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  google/skywater-pdk#442 · Opened Dec 9, 2024

• Synopsys Fusion Compiler library preparation scripts

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  Difficulty 5/5 Over a week Newbie friendliness 25/100

  google/skywater-pdk#441 · 2 comments · Opened Dec 6, 2024

• Faulty .include in file "library/skywater-pdk-libs-sky130_fd_pr/blob/main/cells/nfet_05v0_nvt/sky130_fd_pr__nfet_05v0_nvt.pm3.spice

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  Difficulty 1/5 Under an hour Newbie friendliness 45/100

  google/skywater-pdk#439 · 1 comment · Opened Oct 11, 2024

• MOS Intrinsic Parameters

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  Difficulty 5/5 Over a week Newbie friendliness 20/100

  google/skywater-pdk#437 · 2 comments · Opened Aug 30, 2024

• Access to pg_pins' timing lib

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  google/skywater-pdk#435 · 1 comment · Opened Jul 11, 2024

• Docs: search fails with "Please activate javaScript"

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  Difficulty 1/5 Under an hour Newbie friendliness 48/100

  google/skywater-pdk#433 · 1 comment · Opened Oct 9, 2023

• missong

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  Difficulty 3/5 1-2 days Newbie friendliness 25/100

  google/skywater-pdk#431 · 1 comment · Opened Sep 20, 2023

• VCS error due to defining default net type as none for primitives

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  google/skywater-pdk#425 · 3 comments · Opened Jun 12, 2023

• Stuck at 'make' step while installing skywater pdk

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  google/skywater-pdk#424 · 1 comment · Opened Jun 9, 2023

• Docs: 'dfrtn' doesn't actually have complementary outputs

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  Difficulty 2/5 1-3 hours Newbie friendliness 45/100

  google/skywater-pdk#419 · Opened May 2, 2023

• Running ngspice for sky130 process and open_pdks

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  google/skywater-pdk#417 · 3 comments · Opened Apr 6, 2023

• fetching lib_cell name not working

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  Difficulty 3/5 1-2 days Newbie friendliness 35/100

  google/skywater-pdk#416 · Opened Apr 1, 2023

• sky130osu pdks have drc problem

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  Difficulty 4/5 3-5 days Newbie friendliness 30/100

  google/skywater-pdk#415 · 2 comments · Opened Mar 31, 2023

• slack link is out of date

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  Difficulty 1/5 Under an hour Newbie friendliness 64/100

  google/skywater-pdk#414 · 1 reaction · Opened Mar 31, 2023

• In the docs, please stop the menu collapsing every time I click a sub-menu item

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  Difficulty 3/5 1-2 days Newbie friendliness 35/100

  google/skywater-pdk#407 · 3 comments · Opened Dec 12, 2022

• gate-level simulation using skywater and modelsim

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  google/skywater-pdk#404 · Opened Nov 4, 2022

• Standard cell GDS file issue: Devices aren't marked to be extracted

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  google/skywater-pdk#403 · 1 comment · Opened Nov 3, 2022

• Standard cell GDS file issue: 2 Diffusion areas must be connected according to CDL

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  google/skywater-pdk#402 · Opened Nov 3, 2022

• Integrate ReRAM documentation

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  google/skywater-pdk#400 · 3 comments · Opened Oct 27, 2022

• Request for tutorial: How to construct a new/custom cell library

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  documentation type-question

  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  google/skywater-pdk#395 · 1 comment · 1 reaction · Opened Sep 18, 2022

• Move the documentation to https://sky130-pdk.rtfd.io and setup redirects from https://skywater-pdk.rtfd.io

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  documentation type-todo

  Difficulty 3/5 1-2 days Newbie friendliness 35/100

  google/skywater-pdk#390 · 1 comment · Opened Jul 30, 2022

• Rename this repository to sky130-pdk

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  infrastructure type-todo

  Difficulty 1/5 Under an hour Newbie friendliness 25/100

  google/skywater-pdk#389 · Opened Jul 30, 2022

• Link to the slack community in the docs is outdated #38

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  documentation type-bug

  Difficulty 1/5 Under an hour Newbie friendliness 45/100

  google/skywater-pdk#388 · Opened Jul 26, 2022

• Figure out if `rst_prolog` sphinx configuration can be used instead of `common.inc`

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  documentation type-enhancement

  Difficulty 3/5 1-2 days Newbie friendliness 35/100

  google/skywater-pdk#387 · Opened Jul 24, 2022

• Use common documentation from `google/open-source-pdks` repository

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  documentation type-enhancement

  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  google/skywater-pdk#386 · Opened Jul 24, 2022

• Error"model definition can not be found" while simulating design using Google Skywater PDK in SPICE

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  files-model-spice type-question

  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  google/skywater-pdk#385 · 1 comment · Opened Jul 13, 2022

• sdf_cond missing in hd libraries

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  files-timing-liberty lib-sky130_fd_sc_hd type-bug

  Difficulty 3/5 1-2 days Newbie friendliness 35/100

  google/skywater-pdk#382 · 2 comments · Opened Jul 11, 2022

• MOSFET models show nonphysical gm/ID behavior

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  files-model-spice type-bug

  Difficulty 5/5 Over a week Newbie friendliness 25/100

  google/skywater-pdk#381 · 24 comments · Opened Jul 5, 2022

• Release of continuous SPICE MOSFET models

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  files-model-spice type-enhancement

  Difficulty 5/5 Over a week Newbie friendliness 25/100

  google/skywater-pdk#380 · 65 comments · Opened Jul 5, 2022

• tap cells LEF 5.5 - CLASS CORE; LEF 5.6 and later - CLASS CORE WELLTAP

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  files-layout-lef lib-sky130_fd_sc_hd type-bug

  Difficulty 2/5 1-3 hours Newbie friendliness 48/100

  google/skywater-pdk#376 · 2 comments · Opened Jun 29, 2022

• MOSFET Simulation Parameters

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  type-question

  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  google/skywater-pdk#373 · 2 comments · Opened Jun 2, 2022

• Question about how skywater-pdk LEF file is used by OpenLane

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  files-layout-lef tools-OpenROAD type-question

  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  google/skywater-pdk#365 · 5 comments · Opened Apr 8, 2022

• Erroneous sky130_fd_sc_hd__dlygate4sd3_1 delay reported by timing files

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  files-timing-json lib-sky130_fd_sc_hd type-bug

  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  google/skywater-pdk#363 · Opened Mar 31, 2022

• third_party/make-env/test/third_party is an infinite loop

  May be free again @mithro claimed this 1579 days ago, and no pull request is open. Open

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  files-build type-question

  google/skywater-pdk#360 · 2 comments · 1 assignee · Opened Feb 22, 2022

• No timing libs for diode cells outside of sky130_fd_sc_hd standard cell kit

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  files-timing-json type-bug

  Difficulty 4/5 3-5 days Newbie friendliness 38/100

  google/skywater-pdk#358 · Opened Feb 7, 2022

• Read-the-docs is missing sky130_fd_sc_lp

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  documentation

  Difficulty 3/5 Half a day Newbie friendliness 35/100

  google/skywater-pdk#357 · 3 comments · Opened Feb 5, 2022

• sky130_fd_sc_hd__probe_p_8 spice does not match layout

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  files-layout-gds files-model-spice files-netlist-cdl type-bug

  Difficulty 4/5 3-5 days Newbie friendliness 30/100

  google/skywater-pdk#356 · Opened Jan 28, 2022

• Off-grid standard cells

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  google/skywater-pdk#351 · 5 comments · Opened Dec 24, 2021

• LEF type for tapcells is wrong

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  Difficulty 3/5 1-2 days Newbie friendliness 35/100

  google/skywater-pdk#350 · Opened Dec 18, 2021

• Wrong SPICE netlist of sky130_fd_sc_hvl__lsbuflv2hv_1

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  Difficulty 4/5 3-5 days Newbie friendliness 25/100

  google/skywater-pdk#349 · 6 comments · Opened Dec 17, 2021

• Publish python scripts which generate and run the spice graphs found in the "tests" director in sky130_fd_pr

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  Difficulty 4/5 3-5 days Newbie friendliness 35/100

  google/skywater-pdk#345 · 1 reaction · Opened Nov 24, 2021

• pins are mis-modelled in LEF

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  Difficulty 4/5 3-5 days Newbie friendliness 30/100

  google/skywater-pdk#343 · 9 comments · Opened Nov 11, 2021

• suspicious buf max_capacitance values

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  Difficulty 4/5 3-5 days Newbie friendliness 30/100

  google/skywater-pdk#336 · 2 comments · Opened Sep 2, 2021

• Cadence compatibility

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  Difficulty 5/5 Over a week Newbie friendliness 20/100

  google/skywater-pdk#335 · 6 comments · Opened Aug 27, 2021