MBus: A 17.5 pJ/bit/chip portable interconnect bus for millimeter-scale sensor systems with 8 nW standby power

Ye Sheng Kuo, Pat Pannuto, Gyouho Kim, Zhiyoong Foo, Inhee Lee, Ben Kempke, Prabal Dutta, David Blaauw, Yoonmyung Lee

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

22 Scopus citations

Abstract

We propose an ultra-low power interconnect bus for millimeter-scale wireless sensor nodes. Using only 4 IO pads, the bus minimizes the required chip real estate, enabling ultrasmall form factors in modular sensor node designs. Low power is achieved using a 'clockless' design of member nodes while aggressive power gating allows an ultra-low power standby mode with only 53 gates powered on. An integrated wakeup scheme is compatible with PMUs that have a special low power standby mode. The MBus is fully synthesizable and uses robust timing. Implemented in a 3 module system in 180nm technology, Mbus achieves 8nW of standby power and 17.5 pJ/bit/chip.

Original languageEnglish
Title of host publicationProceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479932863
DOIs
StatePublished - 4 Nov 2014
Externally publishedYes
Event36th Annual Custom Integrated Circuits Conference - The Showcase for Integrated Circuit Design in the Heart of Silicon Valley, CICC 2014 - San Jose, United States
Duration: 15 Sep 201417 Sep 2014

Publication series

NameProceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014

Conference

Conference36th Annual Custom Integrated Circuits Conference - The Showcase for Integrated Circuit Design in the Heart of Silicon Valley, CICC 2014
Country/TerritoryUnited States
CitySan Jose
Period15/09/1417/09/14

Keywords

  • data buses
  • interconnections
  • sensor systems
  • Wireless sensor nodes

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