c4m-pdk-sky130 0.2.5

PDKMaster based PDK for open source GF180MCU process

PDKMaster based Sky130 PDK

This is the PDK for Sky130 based on the PDKMaster framework. It currently is basically undocumented. Development is driven by sky130 MPW shuttle development. A little more information on what is possible can be found in the .gitlab-ci.yml file.

In the v0.1 branch a SRAM block and some analog circuits were present. These blocks did not work anymore with updated PDKMaster and c4m-flexcell modules. These blocks have therefor been removed from the main branch. Furhter development is not done in the sram and the analog branch.

Release history

• v0.2.5:
  • use common doit support from PDKMaster and pdkmaster.io.klayout
  • signoff related fixes
• v0.2.4:
  • patch generation for upstreaming to alliance-check-toolkit and update file generation to changes in that repo.
  • provide scaled down standard cell library with dimensions not based on lambda rules
  • add 5V standard cell library
• v0.2.3:
  • Subproject of project Arrakeen
  • CI improvements
  • Improved module load time though lazy library creation
  • Spice netlist generation improvements
• v0.2.2: build infrastructure and dependencies update; no major code changes but KLayout PCell lib support added.
• v0.2.1: Switch to latest version of PDKMaster and c4m-flexcell. As these updates break the SRAM and analog circuits they have been removed from this stable branch. v0.1 branch is available using old version of these modules and with the SRAM block and the analog circuits. Development of SRAM and analog blocks is done in separate branches sram and analog. Development in these branches will be merged again in upstream as they are fixed.
  Intermediate development was done on a v0.2.0 dev branch.
• v0.1.5: Update bandgap model support, update analog python notebooks.
• v0.1.4: No code changes; update dependencies for latest bug fixes
• v0.1.3: No code change; use PDKMaster 0.9.2 to get Coriolis export compatible with namespace of latest Coriolis release.
• v0.1.2: Fix Coriolis export.
• v0.1.1: No code change; release files now built by CI.
• v0.1.0: Update for release v0.9.0 of PDKMaster
• no notes for older releases

Project Arrakeen subproject

This project is part of Chips4Makers' project Arrakeen. It shares some common guide lines and regulations:

• Contributing.md
• LICENSE.md: license of release code
• LICENSE_rationale.md