TY  - CONF
AU  - Manea, Paul
AU  - Sudarshan, Chirag
AU  - Cüppers, Felix
AU  - Strachan, John Paul
TI  - Non-idealities and Design Solutions for Analog Memristor-Based Content-Addressable Memories
M1  - FZJ-2024-00724
SP  - 6
PY  - 2023
AB  - 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.
T2  - 18th ACM International Symposium on Nanoscale Architectures
CY  - 18 Dec 2023 - 20 Dec 2023, Dresden (Germany)
Y2  - 18 Dec 2023 - 20 Dec 2023
M2  - Dresden, Germany
LB  - PUB:(DE-HGF)8
UR  - https://juser.fz-juelich.de/record/1021427
ER  -