Test Circuit Design for Accurately Characterizing Cells' Output Currents in a Read-Decoupled 8T SRAM Array for Computing-in-Memory Applications

Hao Chiao Hong*, Long Yi Lin, Bo Chang Chen

*Corresponding author for this work

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

1 Scopus citations

Abstract

Computing-in-memory (CIM) is a promising technique for energy-efficiently conducting the massive amount of required multiply-And-Accumulate (MAC) calculations in neural networks (NNs). The read-decoupled 8T (RD8T) SRAM cell is popular in the CIM designs because of being read disturbance free. However, local process variations may lead significant errors to the CIM results. This work proposes an accurate on-chip test circuit design for characterizing the output current of every RD8T SRAM cell in a 8-kb RD8T SRAM array fabricated in 90nm CMOS. The experimental results show the detailed and accurate spatial distribution of the RD8T cells which helps optimize the CIM circuit design.

Original languageEnglish
Title of host publication2023 35th International Conference on Microelectronic Test Structure, ICMTS 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798350346534
DOIs
StatePublished - 2023
Event35th International Conference on Microelectronic Test Structure, ICMTS 2023 - Tokyo, Japan
Duration: 27 Mar 202330 Mar 2023

Publication series

NameIEEE International Conference on Microelectronic Test Structures
Volume2023-March

Conference

Conference35th International Conference on Microelectronic Test Structure, ICMTS 2023
Country/TerritoryJapan
CityTokyo
Period27/03/2330/03/23

Keywords

  • characterization
  • CIM
  • current
  • RD8T
  • SRAM

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