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Smith,
MSP430F5438和MSP430F5438A虽然package和pinout是完全相同的,但是差别还是蛮大的,例如:PMM, ADC的REF, UCS模块等,二者的主要差别如下:
具体请参照文档“Migrating From MSP430F541x/F543x to MSP430F541xA/F543xA”进行程序更改,其链接如下: