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msp430g2553无法下载程序,发现下载时序不对

Other Parts Discussed in Thread: MSP430G2553

  最近自己做了一个用MSP430G2553的小板子,但发现使用SBW下载调试的时候,一直出现错误,unknown device!

然后用示波器,测量Rst、Test两pin的时序,并与Launch Pad下载时序相对比,发现我的时序如下图一样是断续的。

刚开始,怀疑是复位电路,电容的问题,但是更换过1.2nf、2.2nF、680pF,发现问题还是一样的,还请遇到过相同问题的大神们帮忙指点下!