RC trees revisited
Cirit, M.A.
Silicon Compiler Syst., Liberty Corner, NJ;
This paper appears in: Custom Integrated Circuits Conference, 1988., Proceedings of the IEEE 1988
Publication Date: 16-19 May 1988
On page(s): 6.7/1-6.7/4
Meeting Date: 05/16/1988 - 05/19/1988
Location: Rochester, NY, USA
References Cited: 9
INSPEC Accession Number: 3257470
Digital Object Identifier: 10.1109/CICC.1988.20814
Current Version Published: 2002-08-06
Abstract RC tree approximation is a computationally simple method
for calculating the signal delay of MOS circuits with several states of
fanout. The author derives a formal solution of RC tree
equations. Based on this solution, it is shown that even though
waveforms found using RC tree approximation are inaccurate,
delays are exact. The author derives the dependence of the delays on
input waveforms and initial conditions, and he introduces criteria for
estimating the accuracy of single-time-constant waveform approximation
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