Category Archives: Press Releases

CLKDA’s AOCV FX Makes DeepChip’s Top 5 Tools shown at DAC ‘13

Littleton, MA, October 31, 2013 – CLK Design Automation today announced that AOCV FX™ timing derate generator was voted one of top 5 hot tools shown at the Design Automation Conference (DAC) in DeepChip’s annual user survey. DAC is the electronic design automation (EDA) industry’s premier conference, and users reviewed the products exhibited there.

“I give a big congrats to CLKDA’s products ranking in the top 5 with chip designers at DAC,” said John Cooley, DeepChip’s moderator. “AOCV helps customers in trouble. Getting to sign-off keeps getting harder, and designers specifically commented on how fast CLKDA generated instance-specific derates.”

To see the user feedback, visit:

Read the full press release here…


Liberty Technical Advisory Board Announces Membership Grows to 16

“Liberty is the cornerstone for library models and we are delighted to become part of the Technical Advisory Board,” said Isadore Katz, President and CEO of CLK Design Automation. “We look forward to working with the LTAB to extend Liberty with robust derate and variance formats. We believe this will be invaluable to the designers who are making commitments to 20nm, 14nm and beyond.”

Read the full press release here…


CLK Design Automation, Inc. Joins Liberty TAB

LITTLETON, Mass., Dec. 17, 2012 /PRNewswire/ — CLK Design Automation today announced that it has joined the Liberty Technical Advisory Board. Timing derates for process variance, temperature and voltage have become an essential part of 28nm, 20nm and 14nm physical design flows. Today, timing derates depend on a number of different formats including AOCV, OCV and proprietary extensions. CLK’s goal is to help in the standardization of timing derates and variance models based upon the Liberty™ library format, the de facto standard for integrated circuit (IC) and signoff.

“Creating a robust standard for variance models and timing derates will be critical for broad adoption of advanced semiconductor process nodes,” said Isadore Katz , President and CEO of CLK Design Automation, Inc. “It will enable EDA tool vendors, IP suppliers and Semiconductor Foundries to address the challenges of achieving good manufacturing yields with today’s aggressive chip design specifications for power, performance and high levels of system integration.”

“The LTAB welcomes participation from CLK-DA,” said Jim Sproch , LTAB chair.  “CLK-DA brings new ideas and an additional perspective on OCV and we look forward to their involvement in aligning the industry on consistent ways of thinking about and modeling OCV.”

Timing Derates

Timing derates help designers model process variance, temperature, and voltage during the physical design and timing sign-off process. These derates combine manufacturing process information along with other factors, some environmental, some design or library specific, into a set of values that adjust the calculated timing delays to ensure high manufacturing yield.

Today’s leading edge methodologies use AOCV or Advance On Chip Variation. Advanced stage-based on chip variation is a substantial improvement in modeling process variation compared with traditional methods. It can improve design performance and identify complex bugs that might have been masked with traditional timing methods. However, building complete, accurate AOCV tables for full libraries calls for millions of SPICE Monte Carlo runs, which is simply impractical even with unlimited compute resources and software licenses. Moreover, basic methods for generating SBOCV tables are unnecessarily pessimistic. Because they rely on the worst case load and slew they do not reflect the way cells are actually used in a design, and may misdirect the optimization flow.

AOCV FX from CLK Design Automation: Advance Timing Derates Made Practical

AOCV FX is the first practical, turn-key solution that has the performance and accuracy needed to generate a full database of SBOCV derate factors. Derate tables created by AOCV FX can be used with all of the leading timing and optimization tools.  AOCV FX can help designers correct for unnecessary process pessimism, and incorporate other margin factors for voltage, temperature, and delay accuracy.

About CLK Design Automation

CLK Design Automation is the leader in high accuracy timing variation solutions for nanometer semiconductor designs. CLK DA was founded in 2004, and is backed by Morgenthaler Venture Partners and Atlas Ventures. Path FX and AOCV FX are fast, accurate, and practical solutions for timing closure.

Amber, Path FX, and AOCV FX are trademarks of CLK Design Automation. All other trademarks or registered trademarks are the property of their respective owners.

Ahran Dunsmoor
978-486-1056 x208
PR Newswire (

CLK Design Automation Awarded TSMC’s OIP Customers’ Choice Award

CLK DA’s presentation of Applications for Stage-based OCV was given the award based on customer feedback at the 2011 TSMC Open Innovation Ecosystem Forum.

LITTLETON, Mass., Nov. 15, 2011 — CLK Design Automation today announced that it received a 2011 Customers’ Choice Award at TSMC’s Open Innovation Ecosystem Forum. The award was given for the presentation of a paper entitled, Applications of Stage-based OCV. The paper described methods of improving stage-based on chip variation derates. The presentation covered ways to combine the additional variation data collected during derate table generation with static timing analysis to enhance existing timing and optimization flows. The presentation is available upon request from CLK Design Automation. Continue reading

CSR Selects CLK Design Automation’s AOCV FX

Global leader in wireless technology adopts CLK DA’s solution for timing derate generation

Littleton, MA, October 18, 2011 – CLK Design Automation today announced that CSR plc (LSE: CSR and Nasdaq: CSRE) has adopted AOCV FX for the generation of AOCV timing derates, including design specific derates. AOCV timing derates are becoming an essential part of 40nm and 28nm physical design flows to accurately account for manufacturing variance. Design Specific AOCV tables further enhance existing STA and physical optimization tools ability to improve timing closure and design performance. Continue reading

CLK DA Announces Design Specific Stage-based OCV and Constraint Uncertainty for TSMC Reference Flow 12

Littleton, MA, June 1 – CLK Design Automation today announced support for TSMC’s Reference Flow 12.   CLK DA extended its leadership in high accuracy timing solutions with design specific stage-based OCV (SBOCV) table generation and added support for timing constraint uncertainty table generation. Both of these capabilities can be used with any STA or optimization solution that supports stage-based OCV  or constraint uncertainty for TSMC Reference Flow 12.0.
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CLK Design Automation announces High Accuracy Signal Integrity Timing Analysis

Signal FX enables SPICE level accuracy for Path Based SI Timing Analysis – 10,000x Faster

Littleton, MA – May 26, 2011 CLK Design Automation Inc. today announced Signal FX: high accuracy signal integrity timing analysis. Signal FX provides SPICE accurate signal integrity timing analysis, 10,000 times faster than Fast SPICE or SPICE. It works with Path FX to provide a practical, accurate, high performance solution that easily integrates into existing design flows.

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Matthew Raggett Joins CLK Design Automation as Vice President of Field Operations and Business Development

LITTLETON, MA — May 19, 2011— CLK Design Automation Inc., the leader in high accuracy timing solutions for nanometer digital IC design, today announced that Matthew Raggett has joined its executive team as Vice President Field Operations and Business Development.  Mr. Raggett will be responsible for strengthening the company’s worldwide sales and support capabilities, and to drive new business relationships in the industry.

CLK Design Automation Announces Breakthrough Acceleration for AOCV Table Generation

Amber Path FX SBOCV is now millions of times faster than Monte Carlo SPICE

LITTLETON, MA — September 20, 2010— CLK Design Automation Inc today announced breakthrough performance improvements in stage-based advanced on chip variation (AOCV) table generation with Amber Path FX. Amber Path FX SBOCV generates a full set of AOCV tables for a complete 882 cell TSMC 40 nm library in under 16 hours. Creating the same tables using Monte Carlo SPICE or Fast SPICE would have taken months or even years.

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