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MSP430f5438改用5438A后烧主芯片

Other Parts Discussed in Thread: MSP430F5438, MSP430F5438A

如题我们的产品一直用MSP430f5438,怕该芯片停产,就申请了5438A芯片开始做移植。根据资料,我把芯片换过后,在ADC12部分采用兼容模式。上电工作后有时候正常,有时候直接烧主芯片。请问有可能是什么原因,或者提供个技术支持电话,谢谢。