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https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/632008/tms570ls0432-uart-resistors
你好。
我正在为 TMS570LS0432微控制器构建定制板。 我对 SCI_TX 和 SCI_RX 引脚有疑问。 是否需要将电阻器与这些引脚串联？ LaunchPad 原理图没有任何电阻器、但硬件开发套件原理图有。
这来自 HDK 原理图：
这来自 LaunchPad 原理图：-
谢谢你。
