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如题，系统上电后，将MSP430FR2355的P1.1引脚配置成A1口，P1.1浮空，该引脚端口会有电压不？
请问这个引脚作为A1口后，悬空状态下其电压值跟哪些因素有关系？
悬空状态时会有一定的电压感应与干扰
