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Derating is a versatile technique supported by all static timing analysis (STA) tools in industry. In essence, it enables designers to modify any delay or slew computation performed by such tools. Despite this common use in industry, the scientific literature on derating is scarce to none. This has led to its incorrect use, misunderstanding, and even dismissal. This situation has also been exacerbated...
Recently, a transistor level dual-Vth technique has been proposed, where transistors within the same cell are allowed to have different Vth to form the so-call mixed Vth (MVT) cell. However, it is impractical to build a full MVT cell library and include it in the standard dual Vth design flow. To make this practical, current approach adds another design phase after technology mapping to replace high...
This paper describes a design flow for the circuit-level optimization of a technology. The concurrent exploration of device characteristics and library design choices leads to a more application-optimal technology. We illustrate the design flow by: 1) analyzing the impact of buffer cell design, and 2) by optimizing a 130 nm technology for low operational power.
The dramatic increase in leakage current, coupled with the swell in process variability in nano-scaled CMOS technologies, has become a major issue for future IC design. Moreover, due to the spread of leakage power values, leakage variability cannot be neglected anymore. In this work an accurate analytic estimation and modeling methodology has been developed for logic gates leakage under statistical...
A novel methodology for accurate and efficient static timing analysis is presented in this paper. The methodology is based on finding a frequency domain model for the gates which allows uniform treatment of the gates and interconnects. It is shown that despite the highly nonlinear overall gate model, a frequency domain model of the gate with the model parameters, gate moments, as functions of the...
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