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使用MSP430F5438A替换了现有的MSP430F5438后出现问题

Hi team

Good day!

客户使用了官网推荐的MSP430F5438AIPZR替换了MSP430F5438IPZ,出现了问题:

之前用的是MSP430F5438IPZ现在替换成MSP430F5438AIPZR,请问需要更改什么?现在发现直接替代有问题 这个芯片和ec20  4g通信模块一起用的,感觉和ec20通信也正常,只是我们平台接收不到数据。怎么办?

Regards

Aosker