The Nangate 45nm Open Cell Library is an open-source, standard-cell library provided for the purposes of testing and exploring EDA flows.

Nangate has developed and donated this library to Si2.org for open use. The library is intended to aid university research programs and organizations such as Si2 in developing flows, developing circuits and exercising new algorithms. In its first release the Open Cell Library contains 38 different functions ranging from buffers to scan flip-flops with set and reset. With multiple drive strength variants, the library includes over 100 different standard cells. 

The library was generated using Nangate's Library Creator™ and the 45nm FreePDK Base Kit from North Carolina State University (NCSU) and characterization was done using the Predictive Technology Model (PTM) from Arizona State University (ASU). Nangate announced its release on March 3, 2008.

Scan Flip-flop with Set and Reset

The 45nm Open Cell Library contains the following views:

• Liberty (.lib) formatted libraries with CCS Timing, ECSM Timing and NLDM/NLPM data (slow, typical, fast, low temperature and worst low temperature corners)
• Geometric library in Library Exchange Format (LEF)
• Simulation libraries in Verilog and Spice (pre and post parasitic extracted netlists)
• Cell layouts in GDSII
• Schematics in EDIF and PNG formats
• Library databook in HTML format
• OpenAccess database containing layouts and netlists

Download

The 45nm Open Cell Library can be downloaded from the Nangate Resource Center if you are already registered. If you are not yet registered then please fill out this form for download.

Update and News Notifications

Revision History

Conditions for Use

The Open Cell Library is intended for use by universities, other research activities, educational programs and Si2.org members. However allowed, the Open Cell Library is not intended for commercial use. If you have questions or concerns then please contact .

The Open Cell Library is provided by Nangate under the following License:

Nangate Open Cell Library License, Version 1.0. February 20, 2008

Permission is hereby granted, free of charge, to any person or organization obtaining a copy of the Open Cell Library and accompanying documentation (the "Library") covered by this license to use, reproduce, display, distribute, execute, and transmit the Library, and to prepare derivative works of the Library, and to permit third-parties to whom the Library is furnished to do so, all subject to the following:

The copyright notices in the Library and this entire statement, including the above license grant, this restriction and the following disclaimer, must be included in all copies of the Library, in whole or in part, and all derivative works of the Library, unless such copies or derivative works are solely in the form of machine-executable object code generated by a source language processor. The library has been generated using a non-optimized open PDK and is not suited for any commercial purpose. Measuring or benchmarking the Library against any other library or standard cell set is prohibited. Any meaningful library benchmarking must be done in collaboration with Nangate or other providers of optimized and production-ready PDKs.

THE LIBRARY IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE LIBRARY BE LIABLE FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE LIBRARY OR THE USE OR OTHER DEALINGS IN THE LIBRARY.