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Inversed Temperature Dependence aware clock skew scheduling for sequential circuits

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2 Author(s)
Jieyi Long ; Dept. of EECS, Northwestern Univ., Evanston, IL, USA ; Memik, S.O.

We present an Inversed Temperature Dependence (ITD) aware clock skew scheduling framework. Specifically, we demonstrate how our framework can assist dual-Vth assignment in preventing timing violations arising due to ITD effect. We formulate the ITD aware synthesis problem and prove that it is NP-Hard. Then, we propose an algorithm for synergistic temperature aware clock skew scheduling and dual-Vth assignment. Experiments on ISCAS89 benchmarks reveal that several circuits synthesized by the traditional high-temperature corner based flow with a commercial tool exhibit timing violations in the low temperature range while all circuits generated using our methodology for the same timing constraints have guaranteed timing.

Published in:

Design, Automation & Test in Europe Conference & Exhibition (DATE), 2010

Date of Conference:

8-12 March 2010