单片机系统脉冲γ辐射效应研究

Research of Pulse Gamma Ray Radiation Effect on Microcontroller System

摘要: 本文以建立的EE80C196KC20型单片机运行系统为研究对象，在“强光一号”加速器上，对系统中的LM7805型电源芯片和EE80C196KC20型单片机进行了脉冲γ辐射效应实验研究，获得了单片机的闩锁阈值，得到了功耗电流、I/O输出随剂量率的变化规律，从实验上证实了电源芯片对单片机脉冲γ辐射闩锁效应的抑制作用。

Abstract: An experimental result of power chip LM7805 and microcontroller EE80C196KC20 based on the EE80C196KC20 testing system was presented. The pulse gamma ray radiation effect was investigated using “Qiangguang-Ⅰ” accelerator. Latchup threshold of the microcontroller was obtained, and the relationship of supply current and I/O output with the transient dose rate was observed. The result shows that the restrainability of power chip on pulse gamma ray radiation induces microcontroller latchup effect.