libretto: An open cell timing characterizer for open source vlsi design

S Nishizawa, T Nakura - IEICE Transactions on Fundamentals of …, 2023 - search.ieice.org
We propose an open source cell library characterizer. Recently, free and open-sourced
silicon design communities are attracted by hobby designers, academies and industries …

Timing margin recovery with flexible flip-flop timing model

AB Kanng, H Lee - Fifteenth International Symposium on …, 2014 - ieeexplore.ieee.org
In timing signoff for leading-edge SOCs, even few-picosecond timing violations will not only
increase design turnaround time, but also degrade design quality (eg, through power …

PieceTimer: A holistic timing analysis framework considering setup/hold time interdependency using a piecewise model

GL Zhang, B Li, U Schlichtmann - 2016 IEEE/ACM International …, 2016 - ieeexplore.ieee.org
In static timing analysis, clock-to-q delays of flip-flops are considered as constants. Setup
times and hold times are characterized separately and also used as constants. The …

Iterative timing analysis based on nonlinear and interdependent flipflop modelling

N Chen, B Li, U Schlichtmann - IET Circuits, Devices & Systems, 2012 - IET
In this paper, the authors build a new modelling framework for the timing behaviour of a
flipflop by putting the clock-to-q delay into a nonlinear functional relationship with the …

Independent and interdependent latch setup/hold time characterization via Newton–Raphson solution and Euler curve tracking of state-transition equations

S Srivastava, J Roychowdhury - IEEE Transactions on …, 2008 - ieeexplore.ieee.org
Characterizing setup/hold times of latches and registers, which is a task crucial for achieving
timing closure of large digital designs, typically occupies months of computation in …

From process variations to reliability: A survey of timing of digital circuits in the nanometer era

B Li, M Hashimoto, U Schlichtmann - IPSJ Transactions on System …, 2018 - jstage.jst.go.jp
In advanced technology nodes, transistors and interconnects with shrinking physical
dimensions suffer large process variations during manufacturing and are prone to reliability …

Interdependent latch setup/hold time characterization via Euler-Newton curve tracing on state-transition equations

S Srivastava, J Roychowdhury - Proceedings of the 44th annual Design …, 2007 - dl.acm.org
Interdependent characterization of latch setup/hold times is a core component of techniques
for pessimism reduction via Setup/Hold Interdependence Aware Static Timing Analysis …

Clock skew optimization for maximizing time margin by utilizing flexible flip-flop timing

H Seo, J Heo, T Kim - Sixteenth International Symposium on …, 2015 - ieeexplore.ieee.org
Clock skew scheduling is one of the essential steps to be carefully performed during the
design process. Two commonly used strategies for solving the task are the scheduling of …

Impact of random dopant fluctuations on the timing characteristics of flip-flops

W Vanderbauwhede… - IEEE transactions on …, 2010 - ieeexplore.ieee.org
In this work, we have analyzed the effects of variability, due to random dopant fluctuation
(RDF), on the timing characteristics of flip-flops for the future technology generations of 25 …

Utilizing interdependent timing constraints to enhance robustness in synchronous circuits

E Salman, EG Friedman - Microelectronics Journal, 2012 - Elsevier
Interdependent setup-hold times are exploited during the design process to improve the
robustness of a circuit. Considering this interdependence only during static timing analysis …