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msp430f2274 的SBW下载模式,下载程序时verification error

使用LSD-FET430UIF,连接TDO-->SWTDIO,TCK-->SBWTCK,VCCO-->3.3V为430供电,GND连接上430的GND。

下载程序时就出现data verification error,数据校验错误了,SBWTCK直连,SWTDIO接了个47K上拉电阻到3.3V,没有接电容。

4根线是用两头母头的杜邦线连接插针的,连接比较紧了~ 出现数据校验错误可能与哪些原因有关呢?