A high-retention 2T embedded DRAM with cell-body toggle scheme

Huarong Zheng, Baolong Zhou, Weijie Cheng, Yeonbae Chung

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

1 Scopus citations

Abstract

In this work, we present an embedded DRAM utilizing body-controlled 2T gain cell. The memory bit-cell consists of a high-VTH NMOS write transistor and a standard-VTH NMOS read transistor. Since the negative cell-body toggle signal couples up the data '1' storage voltage after data write, this body-controlled technique provides 72% enhanced retention time. In addition, since the subthreshold leakage through the write device is drastically reduced by the negative body bias, the proposed technique exhibits 14 times stronger write disturbance immunity. Simulation results from a 32-kbit eDRAM implemented in a 130 nm triple-well logic CMOS technology demonstrate the effectiveness of the proposed embedded memory techniques.

Original languageEnglish
Title of host publication2014 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479923342
DOIs
StatePublished - 13 Mar 2014
Event2014 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2014 - Chengdu, China
Duration: 18 Jun 201420 Jun 2014

Publication series

Name2014 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2014

Conference

Conference2014 IEEE International Conference on Electron Devices and Solid-State Circuits, EDSSC 2014
Country/TerritoryChina
CityChengdu
Period18/06/1420/06/14

Keywords

  • data retention
  • DRAM
  • embedded memory
  • gain cell

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