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Efficient cache architectures for reliable hybrid voltage operation using EDC codes
Maric, Bojan; Abella Ferrer, Jaume; Valero Cortés, Mateo
Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors; Universitat Politècnica de Catalunya. CAP - Grup de Computació d´Altes Prestacions
Semiconductor technology evolution enables the design of sensor-based battery-powered ultra-low-cost chips (e.g., below 1 p) required for new market segments such as body, urban life and environment monitoring. Caches have been shown to be the highest energy and area consumer in those chips. This paper proposes a novel, hybrid-operation (high Vcc, ultra-low Vcc), single-Vcc domain cache architecture based on replacing energy-hungry bitcells (e.g., 10T) by more energy-efficient and smaller cells (e.g., 8T) enhanced with Error Detection and Correction (EDC) features for high reliability and performance predictability. Our architecture is proven to largely outperform existing solutions in terms of energy and area.
Àrees temàtiques de la UPC::Informàtica::Arquitectura de computadors
Cache memory
Caches
Low energy
Real-time
Reliability
Memòria ràpida de treball (Informàtica)
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