The Lutonium: A Sub-Nanojoule Asynchronous 8051 Microcontroller

  • Authors:
  • Alain J. Martin;Mika Nyström;Karl Papadantonakis;Paul I. Pénzes;Piyush Prakash;Catherine G. Wong;Jonathan Chang;Kevin S. Ko;Benjamin Lee;Elaine Ou;James Pugh;Eino-Ville Talvala;James T. Tong;Ahmet Tura

  • Affiliations:
  • -;-;-;-;-;-;-;-;-;-;-;-;-;-

  • Venue:
  • ASYNC '03 Proceedings of the 9th International Symposium on Asynchronous Circuits and Systems
  • Year:
  • 2003

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Abstract

We describe the Lutonium, an asynchronous 8051 microcontroller designed for low Et2. In 0.18-µm CMOS, at nominal 1.8 V, we expect a performance of 0.5 nJ per instruction at 200 MIPS. At 0.5 V, we expect 4 MIPS and 40J/instruction, corresponding to 25,000 MIPS/Watt. We describe the structure of a fine-grain pipeline optimized for Et2 efficiency, some of the peripherals implementation, and the advantages of an asynchronous implementation of a deep-sleep mechanism.