C-AND: Mixed Writing Scheme for Disturb Reduction in 1T Ferroelectric FET Memory

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

Abstract

Ferroelectric field effect transistor (FeFET) memory has shown the potential to meet the requirements of the growing need for fast, dense, low-power, and non-volatile memories. In this paper, we propose a memory architecture named crossed-AND (C-AND), in which each storage cell consists of a single ferroelectric transistor. The write operation is performed using different write schemes and different absolute voltages, to account for the asymmetric switching voltages of the FeFET. It enables writing an entire wordline in two consecutive cycles and prevents current and power through the channel of the transistor. During the read operation, the current and power are mostly sensed at a single selected device in each column. The read scheme additionally enables reading an entire word without read errors, even along long bitlines. Our Simulations demonstrate that, in comparison to the previously proposed AND architecture, the C-AND architecture diminishes read errors, reduces write disturbs, enables the usage of longer bitlines, and saves up to 2.92X in memory cell area.

Details

Original languageEnglish
Pages (from-to)1595-1605
Number of pages11
JournalIEEE Transactions on Circuits and Systems : a publication of the IEEE Circuits and Systems Society. 1, Regular Papers
Volume69
Issue number4
Publication statusPublished - 10 Jan 2022
Peer-reviewedYes

External IDs

Scopus 85123343053
WOS 000742687600001
Mendeley 80501e7f-7851-3e21-b4a2-e49ac35dc929
dblp journals/tcasI/DahanBSMK22

Keywords

DFG Classification of Subject Areas according to Review Boards

Keywords

  • Array architecture, Emerging memory technology, Ferroelectric field effect transistor (FeFET), Memory, Voltage measurement, memory, Switches, Microprocessors, Logic gates, Writing, Transistors, FeFETs, emerging memory technology, array architecture