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求助:F2812上电后复位引脚有周期性复位脉冲



求助各位大神,这两天焊的F2812的板子,电源芯片是用的70151,上电后复位引脚上有周期大约为4.4ms。具体波形请见附件。

F2812实验板测试实验现象.pdf