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Vector-Matrix Multiplier Architecture for In-Memory Computing Applications With RRAM Arrays | IEEE Journals & Magazine | IEEE Xplore

Vector-Matrix Multiplier Architecture for In-Memory Computing Applications With RRAM Arrays


Abstract:

Artificial Intelligence (AI) has advanced to the stage where modern problems can be transformed into AI problems with computational costs. Increased complexity has expone...Show More

Abstract:

Artificial Intelligence (AI) has advanced to the stage where modern problems can be transformed into AI problems with computational costs. Increased complexity has exponentially raised computation and inference demands, primarily due to Von Neumann architecture limitations. In-memory computing (IMC) revolutionizes this paradigm by eliminating memory read-write overheads. Notably, the utilization of Resistive Random Access Memory (RRAM) in vector-matrix multiplication (VMM) configurations within IMC architectures has demonstrated substantial performance enhancements. In the proposed work, utilizing Digital-to-Time Converters (DTCs) and Time-to-Digital Converters (TDCs) optimizes hardware resources substantially within in-memory computing (IMC) architectures. Our proposed DTC and TDC blocks exhibit power consumptions of 41\ \mu \text{W} and 38\ \mu \text{W} and delays of 896\ \text{ps} and 530\ \text{ps}. Additionally, we introduce a 4T-1R structure with Reset Stop Block (RSB) that facilitates 2-bit RRAM reprogramming and entails a latency of 1.07\ \mu \text{s} and energy/cell of 0.11\ \text{pJ}. The overall energy efficiency of Time-Domain VMM (TDVMM) architecture is 866.6\ \text{Tops/W}, which is 1.61 \times more efficient than contemporary TDVMMs. Furthermore, our design consistently performs with a cycle-to-cycle variability of 23%, showcasing its tolerance to variations.
Published in: IEEE Transactions on Nanotechnology ( Volume: 24)
Page(s): 249 - 259
Date of Publication: 15 April 2025

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Department of electronics and electrical engineering, Indian institute of technology guwahati, Guwahati, India
Department of electronics and electrical engineering, Indian institute of technology guwahati, Guwahati, India
Department of electronics and electrical engineering, Indian institute of technology guwahati, Guwahati, India

Department of electronics and electrical engineering, Indian institute of technology guwahati, Guwahati, India
Department of electronics and electrical engineering, Indian institute of technology guwahati, Guwahati, India
Department of electronics and electrical engineering, Indian institute of technology guwahati, Guwahati, India

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