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https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1303221/tm4c1294kcpdt-voltage-input-to-gpio-before-device-power-up
您好、团队成员：
我是否可以在器件上电之前向 GPIO 输入0.5V？ (此状态 仅持续0.5毫秒)
此致、 桑原启
尊敬的 Kei：
请参阅数据表、确保未超过指定的器件断电时的注入电流。 这是为了避免通过 I/O 为器件供电。
