Proceedings of the 45th Annual Design Automation Conference 2008
DOI: 10.1145/1391469.1391591
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Addressing library creation challenges from recent Liberty extensions

Abstract: The Liberty Format is an open source industry standard for library modeling that has seen significant enhancement in recent years to address the challenges introduced by the new smaller technologies at 65nm and below. Issues associated with modeling Timing, Power and Noise have seen an explosion in complexity. The paper discusses the challenges introduced by the new high accuracy models and techniques to ameliorate them for Library providers.

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Cited by 12 publications
(3 citation statements)
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“…Moreover, with the decreasing size of transistors and interconnect width, the variation of electrical characteristics of logic cells and onchip wires is getting proportionally higher. Delay and slew based library cell modeling methodology is not adequate for the new nanometer-era CMOS technologies any more [1] [2]. This is due in part to the highly nonlinear response behavior of devices and interconnections in deep submicron regimes.…”
Section: Iintroductionmentioning
confidence: 99%
“…Moreover, with the decreasing size of transistors and interconnect width, the variation of electrical characteristics of logic cells and onchip wires is getting proportionally higher. Delay and slew based library cell modeling methodology is not adequate for the new nanometer-era CMOS technologies any more [1] [2]. This is due in part to the highly nonlinear response behavior of devices and interconnections in deep submicron regimes.…”
Section: Iintroductionmentioning
confidence: 99%
“…The traditional, delay and slew based, library cell modeling methodology [1] is no longer accepted as accurate for the new nanometer-era CMOS technologies. Recently, the industry is in the process of adopting the more detailed Current Source Modeling (CSM) as an alternative.…”
Section: Introductionmentioning
confidence: 99%
“…This effectively doubles the information that needs to be stored. Synopsys Liberty NCX uses an empirical waveform compression scheme that takes into account key features of the current vs. time waveforms [1]. As such, their method is very specific to their particular modeling methodology.…”
Section: Introductionmentioning
confidence: 99%