Title:
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VCTA: A Via-Configurable Transistor Array regular fabric
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Author:
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Pons Solé, Marc; Moll Echeto, Francisco de Borja; Rubio Sola, Jose Antonio; Abella Ferrer, Jaume; Vera Rivera, Francisco Javier; González Colás, Antonio María
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors; Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. HIPICS - Grup de Circuits i Sistemes Integrats d'Altes Prestacions; Universitat Politècnica de Catalunya. ARCO - Microarquitectura i Compiladors |
Abstract:
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Layout regularity is introduced progressively by integrated circuit manufacturers to reduce the increasing systematic process variations in the deep sub-micron era. In this paper we focus on a scenario where layout regularity must be pushed to the limit to deal with severe systematic process variations in future technology nodes. With this objective, we propose and evaluate a new regular layout style called Via-Configurable Transistor Array (VCTA) that maximizes regularity at device and interconnect levels. In order to assess VCTA maximum layout regularity tradeoffs, we implement 32-bit adders in the
90 nm technology node for VCTA and compare them with implementations that make use of standard cells. For this purpose we study the impact of photolithography proximity and coma effects on channel length variations, and the impact of shallow trench isolation mechanical stress on threshold voltage variations. We demonstrate that both variations, that are important sources
of energy and delay circuit variability, are minimized through VCTA regularity. |
Abstract:
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Peer Reviewed |
Subject(s):
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-Delay lines -Integrated circuit layout -Photolithography -Proximity effect (lithography) -Via-Configurable Transistor Array -VCTA -Litografia |
Rights:
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Document type:
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Article - Published version Conference Object |
Published by:
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IEEE Computer Society Publications
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