Study on the dose rate upset effect of partially depleted silicon-on-insulator static random access memory

doi:10.1088/1674-1056/17/12/044

中国物理B ›› 2008, Vol. 17 ›› Issue (12): 4599-4605.doi: 10.1088/1674-1056/17/12/044

Study on the dose rate upset effect of partially depleted silicon-on-insulator static random access memory

赵发展¹, 刘梦新¹, 郭天雷¹, 刘刚¹, 海潮和¹, 韩郑生¹, 杨善潮², 李瑞宾², 林东生², 陈伟²

(1)Institute of Microelectronics of Chinese Academy of Sciences, Beijing 100029, China; (2)Northwest Institute of Nuclear Technology, Xi'an 710024, China

收稿日期:2007-10-29 修回日期:2008-08-20 出版日期:2008-12-20 发布日期:2008-12-20

Study on the dose rate upset effect of partially depleted silicon-on-insulator static random access memory

Zhao Fa-Zhan (赵发展)^a, Liu Meng-Xin (刘梦新)^a, Guo Tian-Lei (郭天雷)^a, Liu Gang (刘刚)^a, Hai Chao-He (海潮和)^a, Han Zheng-Sheng (韩郑生)^a, Yang Shan-Chao (杨善潮)^b, Li Rui-Bin (李瑞宾)^b, Lin Dong-Sheng (林东生)^b, Chen Wei (陈伟)^b

^a Institute of Microelectronics of Chinese Academy of Sciences, Beijing 100029, China; ^b Northwest Institute of Nuclear Technology, Xi'an 710024, China

Received:2007-10-29 Revised:2008-08-20 Online:2008-12-20 Published:2008-12-20

摘要/Abstract

摘要： This paper implements the study on the Dose Rate Upset effect of PDSOI SRAM (Partially Depleted Silicon-On-Insulator Static Random Access Memory) with the Qiangguang-I accelerator in Northwest Institute of Nuclear Technology. The SRAM (Static Random Access Memory) chips are developed by the Institute of Microelectronics of Chinese Academy of Sciences. It uses the full address test mode to determine the upset mechanisms. Specified address test is taken in the same time. The test results indicate that the upset threshold of the PDSOI SRAM is about 1x10⁸Gy(Si)/s. However, there are few bits upset when the dose rate reaches up to 1.58x10⁹Gy(Si)/s. The SRAM circuit can still work after the high level γ ray pulse. Finally, the upset mechanism is determined to be the rail span collapse by comparing the critical charge with the collected charge after γ ray pulse. The physical locations of upset cells are plotted in the layout of the SRAM to investigate the layout defect. Then, some layout optimizations have been taken to improve the dose rate hardened performance of the PDSOI SRAM.

关键词: dose rate, PDSOI, SRAMs, upset

Abstract: This paper implements the study on the Dose Rate Upset effect of PDSOI SRAM (Partially Depleted Silicon-On-Insulator Static Random Access Memory) with the Qiangguang-I accelerator in Northwest Institute of Nuclear Technology. The SRAM (Static Random Access Memory) chips are developed by the Institute of Microelectronics of Chinese Academy of Sciences. It uses the full address test mode to determine the upset mechanisms. Specified address test is taken in the same time. The test results indicate that the upset threshold of the PDSOI SRAM is about 1x10⁸Gy(Si)/s. However, there are few bits upset when the dose rate reaches up to 1.58x10⁹Gy(Si)/s. The SRAM circuit can still work after the high level $\gamma$ ray pulse. Finally, the upset mechanism is determined to be the rail span collapse by comparing the critical charge with the collected charge after $\gamma$ ray pulse. The physical locations of upset cells are plotted in the layout of the SRAM to investigate the layout defect. Then, some layout optimizations have been taken to improve the dose rate hardened performance of the PDSOI SRAM.

Key words: dose rate, PDSOI, SRAMs, upset

中图分类号: (Pulse and digital circuits)

84.30.Sk

61.80.-x (Physical radiation effects, radiation damage) 81.40.Wx (Radiation treatment)

赵发展, 刘梦新, 郭天雷, 刘刚, 海潮和, 韩郑生, 杨善潮, 李瑞宾, 林东生, 陈伟. Study on the dose rate upset effect of partially depleted silicon-on-insulator static random access memory[J]. 中国物理B, 2008, 17(12): 4599-4605.

Zhao Fa-Zhan (赵发展), Liu Meng-Xin (刘梦新), Guo Tian-Lei (郭天雷), Liu Gang (刘刚), Hai Chao-He (海潮和), Han Zheng-Sheng (韩郑生), Yang Shan-Chao (杨善潮), Li Rui-Bin (李瑞宾), Lin Dong-Sheng (林东生), Chen Wei (陈伟). Study on the dose rate upset effect of partially depleted silicon-on-insulator static random access memory[J]. Chin. Phys. B, 2008, 17(12): 4599-4605.

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Study on the dose rate upset effect of partially depleted silicon-on-insulator static random access memory

Study on the dose rate upset effect of partially depleted silicon-on-insulator static random access memory

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