Libraries¶
Library Naming¶
Libraries in the SKY130 PDK are named using the following scheme;
<Process name> _ <Library Source Abbreviation> _ <Library Type Abbreviation> [_ <Library Name>]
All sections are lower case and separated by an underscore. The sections are;
The Process name in is the name of the process technology, for this PDK it is always sky130.
The Library Source Abbreviations is a short abbreviation for who created and is responsible for the library. The table below shows the current list of Library Source Abbreviations;
Library Source
Library Source Abbreviation
The SkyWater Foundry
fd
Efabless
ef
Oklahoma State University
osu
The Library Type Abbreviation is a short two letter abbreviation for the type of content found in the library. The table below shows the current list of Library Type Abbreviations;
Library Type
Library Type Abbreviation
Primitive Cells
pr
Digital Standard Cells
sc
Build Space (Flash, SRAM, etc)
bd
IO and Periphery
io
Miscellaneous
xx
The Library Name is an optional short abbreviated name used when there are multiple libraries of a given type released from a single library source. If only one library of a given type is going to ever be released, this can be left out.
Creating New Libraries¶
Third party developers are encourage to create new and interesting libraries for usage with the SKY130 process technology. These libraries can even be included in the SKY130 PDK if it meets the following criteria;
It is released under an OSI approved license.
TODO: Finish the criteria.
Primitive Libraries¶
Foundry provided¶
Digital Standard Cell Libraries¶
Foundry provided Digital Standard Cell Libraries¶
- SkyWater Foundry Provided Standard Cell Libraries
- sky130_fd_sc_hd - SKY130 High Density Digital Standard Cells (SkyWater Provided)
- sky130_fd_sc_hdll - SKY130 High Density Low Leakage Digital Standard Cells (SkyWater Provided)
- sky130_fd_sc_hs - SKY130 High Speed Digital Standard Cells (SkyWater Provided)
- sky130_fd_sc_ls - SKY130 Low Speed Digital Standard Cells (SkyWater Provided)
- sky130_fd_sc_ms - SKY130 Medium Speed Digital Standard Cells (SkyWater Provided)
Third party provided Digital Standard Cell Libraries¶
Build Space Libraries¶
The SKY130 currently offers two build space libraries. Build space libraries are designed to be used with technologies like memory compilers and built into larger macros. The provided libraries have specially crafted design rules to enable higher density compared to other libraries.