Bellevue: A 50MHz variable-width SIMD 32bit microcontroller at 0.37V for processing-intensive wireless sensor nodes

Author

Botman, Francois ; De Vos, J. ; Bernard, Sebastien ; Stas, Francois ; Legat, Jean-Didier ; Bol, David

Author_Institution

ICTEAM, Univ. Catholique de Louvain, Louvain-la-Neuve, Belgium

fYear

2014

fDate

1-5 June 2014

Firstpage

1207

Lastpage

1210

Abstract

In the context of wireless sensor nodes for the Internet-of-Things, there is a need for low-power high-performance computing cores for video monitoring applications. In this paper we present a custom 50MHz 32-bit microcontroller running at 0.37V built on a 65nm LP/GP CMOS process. Part of an energy-harvesting SoC with on-chip CMOS imager, it features adaptive voltage scaling, low-power 1.55μW sleep mode, and a variable-width SIMD pipeline and multiply/divide unit, achieving 7.7μW/MHz overall.

Keywords

CMOS digital integrated circuits; CMOS image sensors; Internet of Things; energy harvesting; microcontrollers; pipeline processing; power aware computing; system-on-chip; wireless sensor networks; Bellevue microcontroller; Internet of Things; LP-GP CMOS process; energy harvesting SoC; frequency 50 MHz; low-power high-performance computing core; power 1.55 muW; processing-intensive wireless sensor node; sleep mode; system-on-chip CMOS imager; variable-width SIMD pipeline; video monitoring application; voltage 0.37 V; voltage scaling; word length 32 bit; Clocks; Logic gates; Microcontrollers; Pipelines; Switches; System-on-chip; Wireless sensor networks; CMOS digital integrated circuits; VLSI; embedded microcontroller; near-threshold/subthreshold logic; system-on-chip (SoC); ultralow power; ultralow voltage; variability mitigation;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), 2014 IEEE International Symposium on

Conference_Location

Melbourne VIC

Print_ISBN

978-1-4799-3431-7

Type

conf

DOI

10.1109/ISCAS.2014.6865358

Filename

6865358