Adaptive minimum supply voltage for subthreshold circuits considering noise margin and PT variations

Shien Chun Luo, Lih-Yih Chiou

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The autonomous, energy-harvesting devices need to maintain tasks with power consumption as low as possible. Scaling down the digital supply voltage into subthreshold range is one of the effective schemes. However, the signal integrity, depending on hard-to-predict inter- and intra-die process variations, restricts the voltage scalability. The minimum supply voltage varies with processes and environments, and the predefined minimum operating voltage may cause functional errors. This work therefore proposes an adaptive formulation of the minimum supply voltage. Compared with previous works, the proposed formulation enhances the effectiveness by considering noise margin and process variations. The formulation also leads to the low-overhead implementation, enabling the run-time calculation in the power-constrained devices.

Original languageEnglish
Title of host publication1st International Conference on Green Circuits and Systems, ICGCS 2010
Pages499-503
Number of pages5
DOIs
Publication statusPublished - 2010 Sep 20
Event1st International Conference on Green Circuits and Systems, ICGCS 2010 - Shanghai, China
Duration: 2010 Jun 212010 Jun 23

Publication series

Name1st International Conference on Green Circuits and Systems, ICGCS 2010

Other

Other1st International Conference on Green Circuits and Systems, ICGCS 2010
CountryChina
CityShanghai
Period10-06-2110-06-23

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering

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