Local Bit-line Charge-sharing based Pre-charging SRAM for Near Threshold Voltage Operation

Hyunchul Park, Jongsun Park

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

Abstract

Recent SRAM in System-on-Chip (SoC) is required to consume as low power as possible while maintaining its performance and reliability. Lowering supply voltage is an efficient way to reduce power consumption in SRAM. However, SRAM operation becomes highly unstable when its supply voltage is in Near-Threshold Voltage (NTV) region. In this paper, we propose a local bit-line charge-sharing based pre-charging SRAM cell which can sustain performance under NTV region. The proposed cell shows improved read stability in NTV region compared to the previous cells. In addition, by employing transmission gate as access transistors in the proposed cell, better read performance has been achieved at ISO-VMIN condition. The simulation results using 28nm CMOS technology shows that the proposed SRAM cell achieves 2X large read SNM with x1.44-x7.48 speed improvement.

Original languageEnglish
Title of host publicationProceedings - International SoC Design Conference 2021, ISOCC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages105-106
Number of pages2
ISBN (Electronic)9781665401746
DOIs
Publication statusPublished - 2021
Event18th International System-on-Chip Design Conference, ISOCC 2021 - Jeju Island, Korea, Republic of
Duration: 2021 Oct 62021 Oct 9

Publication series

NameProceedings - International SoC Design Conference 2021, ISOCC 2021

Conference

Conference18th International System-on-Chip Design Conference, ISOCC 2021
Country/TerritoryKorea, Republic of
CityJeju Island
Period21/10/621/10/9

Bibliographical note

Funding Information:
This work was supported in part by the National Research Foundation of Korea grant funded by the Korea government (NRF-2020R1A2C3014820).

Publisher Copyright:
© 2021 IEEE.

Keywords

  • Local bit-line sharing
  • Near threshold voltage(NTV)
  • SRAM

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Information Systems
  • Hardware and Architecture
  • Electrical and Electronic Engineering

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