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In-memory Multibit Multiplication and Accumulation Based on an Automatic Pulse Generation Circuit
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  • Su Bai,
  • Jiaqi Guo,
  • Yaohua Xu,
  • Chunyu Peng,
  • Xiulong Wu
Su Bai
Anhui University
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Jiaqi Guo
Anhui University
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Yaohua Xu
Anhui University

Corresponding Author:[email protected]

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Chunyu Peng
Anhui University
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Xiulong Wu
Anhui University
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Computing in-memory technology is a promising way of solving the “memory wall” problem when processing large-scale data,accelerating data processing, and improving energy efficiency. However, calculations in the analog domain are limited in terms of accuracy and sensitivity to process, voltage, and temperature (PVT) changes. In this study, we proposed a computing in memory multiply-and-accumulate (CIM MAC) circuit which could generate pulses automatically and which endows the time-domain approach with a digital character. The MAC result was reflected by the pulse edge and converted into the final digital output using a dual-edge counter quantization circuit, improving the accuracy of the MAC operation and reducing the difficulty of quantization. The performance of the proposed CIM circuit was evaluated using a 28-nm process. It could achieve 4-bit multiplication without errors with an energy efficiency of 40.34 to 883.37 TOPS/W.
20 Jul 2023Submitted to Electronics Letters
20 Jul 2023Submission Checks Completed
20 Jul 2023Assigned to Editor
25 Jul 2023Reviewer(s) Assigned
03 Aug 2023Review(s) Completed, Editorial Evaluation Pending
10 Aug 2023Editorial Decision: Revise Major
30 Oct 20231st Revision Received
31 Oct 2023Submission Checks Completed
31 Oct 2023Assigned to Editor
31 Oct 2023Review(s) Completed, Editorial Evaluation Pending
31 Oct 2023Reviewer(s) Assigned
13 Nov 2023Editorial Decision: Accept