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@INPROCEEDINGS{Kuriakose:1033840,
author = {Kuriakose, Neethu and Ashok, Arun and Kusuma, Sabitha and
Grewing, Christian and Zambanini, Andre and van Waasen,
Stefan and Kruth, Andre},
title = {{I}ntegrated {M}emristor {C}ontrol and {C}rossbar {A}rray
{D}esign using {TSMC} 28 nm {T}echnology},
school = {University of Duisburg Essen},
reportid = {FZJ-2024-06681},
year = {2024},
abstract = {The crossbar array architecture with memristors is used for
vector matrix multiplication (VMM) and acts askernels in
neuromorphic computing [1]. A conductance control scheme
with a regulated voltage source willimprove the architecture
and reduce the possible potential divider effects due to
line resistances [2]. A change inconductance is also
possible with the provision of a regulated current source
and measuring the voltage acrossthe memristor. A regulated
2T1R memristor conductance control architecture is proposed
in this work, whichavoids the potential divider effect and
virtual ground scenario in a regular crossbar scheme, as
well as conductancecontrol by passing a regulated current
through memristors as shown in Fig. 1. The sneak path
current is notallowed to enter by providing the ground
potential to both terminals of memristors. The control
architecture witha 2×2 array size is successfully taped out
in a 28 nm CMOS technology. The MEMCTRL block includes a
corecorresponding to the intended conductance control
architecture, incorporating voltage mode control and
currentmode control in two rows, core biasing circuits,
resistive DAC, and a digital control block for the pulse
widthgenerator with chip layout shown in Fig. 2. The pulse
width control and digital configurations for selecting
rowsand columns are done with an integrated RISC-V
processor, running with a clock frequency of up to 100
MHz.Alternatively, direct access is enabled through a JTAG
programming interface. The readout circuit is
implementedwith a current source SAR ADC. The overall size
of the chip is 1.4 mm by 1.0 mm, of which the memristor
controlcircuit incorporates an area of 0.4 mm by 0.5 mm. The
memristors are not co-integrated in this
architecture,however, pins are provided for accessing
external memristors.},
month = {Nov},
date = {2024-11-10},
organization = {MEMRISYS 2024, Seoul (South Korea), 10
Nov 2024 - 13 Nov 2024},
subtyp = {After Call},
cin = {ZEA-2 / PGI-4},
cid = {I:(DE-Juel1)ZEA-2-20090406 / I:(DE-Juel1)PGI-4-20110106},
pnm = {5234 - Emerging NC Architectures (POF4-523)},
pid = {G:(DE-HGF)POF4-5234},
typ = {PUB:(DE-HGF)6},
doi = {10.34734/FZJ-2024-06681},
url = {https://juser.fz-juelich.de/record/1033840},
}