Total Ionizing Dose Effects of SRAM-Based Compute-In-Memory Macro With Analog MAC Operations

IF 1.9 3区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Transactions on Nuclear Science Pub Date : 2025-01-07 DOI:10.1109/TNS.2025.3526665

Jinzhe Tan;Renlong Li;Ding Ding;Zhuojun Chen

引用次数: 0

Abstract

Compute-in-memory (CIM) with high parallelism and energy efficiency is an attractive solution for next-generation orbital edge computing. However, the reliability of the CIM circuits in a radiation environment is rarely studied. In this article, we present an analog CIM macro based on static random access memory (SRAM) in a 55-nm CMOS process, featuring multiply-accumulate (MAC) operations. The performance degradation including computational linearity and MAC operation accuracy is evaluated using the

$\gamma $

-ray irradiation experiment. The mechanism of the radiation effect of the analog CIM is revealed and a radiation-induced calculation error (RICE) model is proposed. The simulation results show that the accuracy of MAC operation decreases by about 5% after irradiation to 250 krad(Si), in good agreement with the measurement results. This article guides the design and application of SRAM-based CIM processors in the radiation environment.

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基于sram的内存中计算宏与模拟MAC操作的总电离剂量效应

内存计算（CIM）具有高并行性和高能效，是下一代轨道边缘计算的一个有吸引力的解决方案。然而，对辐射环境下CIM电路可靠性的研究却很少。在本文中，我们提出了一个基于55纳米CMOS工艺中静态随机存取存储器（SRAM）的模拟CIM宏，具有乘法累积（MAC）操作。利用γ射线辐照实验，对计算线性度和MAC操作精度等性能退化进行了评价。揭示了模拟CIM辐射效应的机理，提出了辐射诱导计算误差模型。模拟结果表明，辐照至250 krad（Si）后，MAC操作精度降低约5%，与实测结果吻合较好。本文指导了基于sram的CIM处理器在辐射环境中的设计和应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Nuclear Science 工程技术-工程：电子与电气

CiteScore

3.70

自引率

27.80%

发文量

314

审稿时长

6.2 months

期刊介绍： The IEEE Transactions on Nuclear Science is a publication of the IEEE Nuclear and Plasma Sciences Society. It is viewed as the primary source of technical information in many of the areas it covers. As judged by JCR impact factor, TNS consistently ranks in the top five journals in the category of Nuclear Science & Technology. It has one of the higher immediacy indices, indicating that the information it publishes is viewed as timely, and has a relatively long citation half-life, indicating that the published information also is viewed as valuable for a number of years. The IEEE Transactions on Nuclear Science is published bimonthly. Its scope includes all aspects of the theory and application of nuclear science and engineering. It focuses on instrumentation for the detection and measurement of ionizing radiation; particle accelerators and their controls; nuclear medicine and its application; effects of radiation on materials, components, and systems; reactor instrumentation and controls; and measurement of radiation in space.

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