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https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1574499/mspm0l1227-open-drain-gpio-output
工具/软件：
尊敬的专家：
是否有办法实现开漏 I/O？ 谢谢你。
您好、Angela、
所有 IO 都可以用作开漏 IO、而只有 PA0 和 PA1 是物理开漏 IO、可耐受 5V 电压。 其他仅耐受 3V 电压（或不超过 VCC + 0.3V）。
B.R.
Sal
