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MSP430G2553端口驱动能力不足问题?



如图所示,两个端口内部上拉,同时输出高电平时,会影响另一个端口电平。

外围没有接任何电路,只是接入示波器探头

一个端口100ms跳变,另一个端口500ms跳变。

这是430本身的问题吗?