如图,msp430f5328 中进入LMP3,引脚P4.5,P4.4(即图中 RXD_MCU,TXD_MCU)设置为输入、上拉下拉电阻未使能,这种情况下功耗竟然比设置成输入,使能上拉或下拉电阻要大40uA,请问,为什么会出现这种情况?
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如图,msp430f5328 中进入LMP3,引脚P4.5,P4.4(即图中 RXD_MCU,TXD_MCU)设置为输入、上拉下拉电阻未使能,这种情况下功耗竟然比设置成输入,使能上拉或下拉电阻要大40uA,请问,为什么会出现这种情况?