%0 Conference Paper
%A Manea, Paul
%A Sudarshan, Chirag
%A Cüppers, Felix
%A Strachan, John Paul
%T Non-idealities and Design Solutions for Analog Memristor-Based Content-Addressable Memories
%M FZJ-2024-00724
%P 6
%D 2023
%X Memristor-based analog Content Addressable Memories (aCAMs)offer robust parallel pattern look-up capabilities, significantly en-hancing the scope of In-Memory Computing applications. Thispaper presents challenges of these analog circuits, which may oc-cur during the inference, and proposes solutions to overcome them.Precisely, we investigate the impact of temperature-dependent be-havior, CMOS process variations and memristor telegraph readnoise. We demonstrate that one challenging issue affecting memris-tors analog computing applications, namely telegraph read noise, isnot a significant problem in aCAM. We introduce a framework thataccounts for these combined distortions to define variability-awareaCAM windows and estimate the bit resolution of a CAM cell. Usingthis framework we estimate the bit resolution to 2 bits before apply-ing compensating measures and to 4 bits afterwards. We study howvariations affect the inference accuracy of the IRIS classificationdataset using our novel torchCAM model. We introduce a stream-lined aCAM design featuring a memristor comparator for simplifiedinput-to-reference comparison and a novel cell architecture withtwo symmetrical memristor comparator units.
%B 18th ACM International Symposium on Nanoscale Architectures
%C 18 Dec 2023 - 20 Dec 2023, Dresden (Germany)
Y2 18 Dec 2023 - 20 Dec 2023
M2 Dresden, Germany
%F PUB:(DE-HGF)8
%9 Contribution to a conference proceedings
%U https://juser.fz-juelich.de/record/1021427