M0N0: A Performance-Regulated 0.8-to-38MHz DVFS ARM Cortex-M33 SIMD MCU with 10nW Sleep Power

Pranay Prabhat, Benoit Labbe, Graham Knight, Anand Savanth, Jonas Svedas, Matthew J. Walker, Supreet Jeloka, Philex Ming Yan Fan, Fernando Garcia-Redondo, Thanusree Achuthan, James Myers

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

10 Citations (Scopus)

Abstract

Recent research has shown subthreshold operation to reduce active energy in low-power MCUs [1], [2], [5]. However, some applications impose additional constraints. For battery-powered sensor nodes deployed in remote locations, the MCU may lie dormant for long periods, only waking up when a sensor detects activity. For such cases, the MCU needs very low sleep power to maximize battery lifetime, deterministic real-time response to capture rare sensor events, and energy-efficient operation with enough compute and memory to run useful workloads. This work shows a 65nm Arm Cortex-M33 SoC for constrained battery-powered sensor nodes achieving 10 nW sleep power (4 KB retention) with fine-grained DVFS and performance regulation from 0.8 MHz (0.40 V) to 38 MHz (0.75V) to address a range of real-time requirements across the operating range of 0-to-85° C and 1.0-to-1.5V battery voltage. Digital circuit optimizations reduce active power to 47μ W (20pJ/cycle) on a high-activity keyword spotting (KWS) workload.

Original languageEnglish
Title of host publication2020 IEEE International Solid-State Circuits Conference, ISSCC 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages422-424
Number of pages3
ISBN (Electronic)9781728132044
DOIs
Publication statusPublished - 2020 Feb
Event2020 IEEE International Solid-State Circuits Conference, ISSCC 2020 - San Francisco, United States
Duration: 2020 Feb 162020 Feb 20

Publication series

NameDigest of Technical Papers - IEEE International Solid-State Circuits Conference
Volume2020-February
ISSN (Print)0193-6530

Conference

Conference2020 IEEE International Solid-State Circuits Conference, ISSCC 2020
Country/TerritoryUnited States
CitySan Francisco
Period20-02-1620-02-20

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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