# Useful Resources

This page provides a curated collection of resources for designing integrated circuits using the GF180MCU open source PDK and manufacturing with wafer.space.

## GF180MCU PDK Resources

### Official Documentation
- [GF180MCU Open Source PDK GitHub Repository](https://github.com/google/gf180mcu-pdk) - The official repository containing the Process Design Kit files
- [GF180MCU PDK Documentation](https://gf180mcu-pdk.readthedocs.io/) - Comprehensive documentation for the PDK
- [GlobalFoundries 180nm Technology](https://www.globalfoundries.com/technology-solutions/cmos/mature-cmos/180nm) - Official technology information from GlobalFoundries

### Design Tools
- [OpenLane](https://github.com/The-OpenROAD-Project/OpenLane) - Complete RTL to GDSII flow for the GF180MCU PDK
- [Magic VLSI Layout Tool](http://opencircuitdesign.com/magic/) - Layout editor with GF180MCU technology files
- [KLayout](https://www.klayout.de/) - Layout viewer and editor with GF180MCU support
- [Xschem](https://xschem.sourceforge.io/stefan/index.html) - Schematic capture tool compatible with GF180MCU

### Simulation and Verification
- [ngspice](http://ngspice.sourceforge.net/) - Open source SPICE simulator with GF180MCU models
- [Xyce](https://xyce.sandia.gov/) - Parallel SPICE simulator for large-scale circuit simulation
- [IRSIM](http://opencircuitdesign.com/irsim/) - Switch-level simulator for digital circuits

## wafer.space Resources

### Official Links
- [wafer.space Website](https://wafer.space/) - Main website for wafer.space shuttle services
- [wafer.space Documentation](https://docs.wafer.space/) - Official documentation portal
- [wafer.space Blog](https://blog.wafer.space/) - Latest news and updates about shuttle runs

### Community and Support
- [wafer.space Discord](https://discord.gg/waferspace) - Community discussion and support
- [wafer.space Twitter/X](https://twitter.com/waferspace) - Official announcements and updates

## Educational Resources

### Tutorials and Courses
- [Zero to ASIC Course](https://zerotoasiccourse.com/) - Comprehensive course on ASIC design using open source tools
- [OpenLane Documentation](https://github.com/The-OpenROAD-Project/OpenLane) - Complete RTL to GDSII flow documentation and examples
- [Analog IC Design Using Open Source Tools](https://github.com/chipforge/StdCellLib) - Resources for analog design with open PDKs

### Example Designs
- [Caravel User Project Template](https://github.com/efabless/caravel_user_project) - Template for creating designs for fabrication
- [OpenMPW Shuttle Projects](https://platform.efabless.com/projects/public) - Browse submitted open source chip designs
- [GF180MCU Community Projects](https://github.com/google/gf180mcu-pdk) - Check issues and discussions for community designs

### Design Guides
- [GF180MCU PDK Documentation](https://gf180mcu-pdk.readthedocs.io/) - Complete documentation including design rules, analog layout, and digital standard cells

## Community Projects and Tools

### Open Source EDA Tools
- [OpenROAD](https://theopenroadproject.org/) - Integrated chip design flow
- [Qflow](http://opencircuitdesign.com/qflow/) - Complete digital synthesis flow
- [SKY130 to GF180MCU Migration Guide](https://github.com/google/skywater-pdk-libs-sky130_fd_sc_hd) - For porting designs between PDKs

### Verification and Testing
- [cocotb](https://www.cocotb.org/) - Python-based verification framework
- [Verilator](https://www.veripool.org/verilator/) - Fast Verilog simulator
- [SymbiFlow](https://symbiflow.github.io/) - Open source FPGA toolchain (useful for prototyping)

## Getting Help

### Forums and Communities
- [Open Source Silicon Slack](https://invite.skywater.tools/) - Active community of open source silicon enthusiasts
- [GF180MCU PDK GitHub Discussions](https://github.com/google/gf180mcu-pdk/discussions) - Technical discussions about the PDK
- [Reddit r/OpenSourceSilicon](https://www.reddit.com/r/opensourcesilicon/) - Community discussions

### Documentation and References
- [VLSI Design Basics](https://www.vlsi-expert.com/) - Fundamental concepts in VLSI design
- [All About Circuits](https://www.allaboutcircuits.com/) - Electronics and circuit design tutorials
- [IEEE Xplore Digital Library](https://ieeexplore.ieee.org/) - Academic papers and standards (subscription required)

## Manufacturing Resources

### Packaging and Assembly
- [Open Source Hardware Association](https://www.oshwa.org/) - Resources for open hardware projects
- [PCB Assembly Services](https://www.pcbway.com/) - For chip packaging and board assembly
- [Wire Bonding Services](https://www.apogeeweb.net/article/271.html) - Information about chip packaging options

### Testing and Characterization
- [Semiconductor Test Basics](https://semiengineering.com/knowledge_centers/test/) - Overview of IC testing
- [IC Testing Resources](https://www.vlsi-expert.com/) - General IC testing and characterization techniques

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*This page is continuously updated with new resources. If you have suggestions for additional resources, please contribute through our GitHub repository.*