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JRM Vol.36 No.1 pp. 88-94
doi: 10.20965/jrm.2024.p0088
(2024)

Paper:

Assessment of Radiation Tolerance of Flash Memory by γ-Ray Irradiation

Kenichiro Takakura*1 ORCID Icon, Kensuke Matsumoto*2, Kousei Tateishi*2, Masashi Yoneoka*3, Isao Tsunoda*1 ORCID Icon, Shigekazu Suzuki*4, and Shinji Kawatsuma*4 ORCID Icon

*1Faculty of Electronics and Information Systems Engineering, Kumamoto KOSEN
2659-2 Suya, Koshi city, Kumamoto 861-1102, Japan

*2Electronics and Information Systems Engineering Advanced Course, Kumamoto KOSEN
2659-2 Suya, Koshi city, Kumamoto 861-1102, Japan

*3Center for Technical and Educational Support, Kumamoto KOSEN
2659-2 Suya, Koshi city, Kumamoto 861-1102, Japan

*4Department of Mechanical System Engineering, Fukushima KOSEN
30 Nagao, Kamiarakawa, Taira, Iwaki, Fukushima 970-8034, Japan

Received:
July 11, 2023
Accepted:
January 5, 2024
Published:
February 20, 2024
Keywords:
radiation tolerance, Raspberry Pi, flash memory, gamma-ray irradiation, total ionization dose
Abstract

The radiation tolerance of a microcontroller (Raspberry Pi) required for the development of decommissioning robots was investigated. We found that the flash memory needed to boot the microcontroller had particularly low-radiation tolerance, significantly reducing the operation duration of the microcontroller in a radiation environment. We also found that certain high-performance flash memories have high radiation tolerance. Investigation of the process by which flash memory becomes inoperable revealed that internal memory information is rewritten owing to irradiation, leading to limited lifetime for memory.

Operating rate of flash memories after γ-ray irradiation

Operating rate of flash memories after γ-ray irradiation

Cite this article as:
K. Takakura, K. Matsumoto, K. Tateishi, M. Yoneoka, I. Tsunoda, S. Suzuki, and S. Kawatsuma, “Assessment of Radiation Tolerance of Flash Memory by γ-Ray Irradiation,” J. Robot. Mechatron., Vol.36 No.1, pp. 88-94, 2024.
Data files:
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Last updated on Apr. 05, 2024