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可以的,EK-TM4C1294XL有三种供电方式,分别是下面三种
The Connected LaunchPad can be powered from three different input options:
• On-board ICDI USB cable (Debug, Default)
• Target USB cable
• BoosterPack or Breadboard adapter connection
The JP1 power-select jumper is used to select one of the power sources.
In addition, the JP3 power jumper can be used to isolate the 3.3-volt output of the TPS73733 from the board’s 3.3-volt rail.
A TPS2052B load switch is used to regulate and control power to the Target USB connector when the microcontroller is acting in USB host mode. This load switch also limits current to the BoosterPack and Breadboard adapter headers when the JP1 jumper is in the ICDI position.
你可以直接选择第三种供电,然后外部电压接VCC引脚就好了,注意跳线一定要选择正确。