Pin Multiplexing on PIC32MX570F512L for UART 5 - Is RPF3 available for UART5TX?

No, it is not available for UART 5. The RPF3 pin is not available as an output on USB devices.

The following devices have this limitation on UART5:

  • PIC32MX330
  • PIC32MX350
  • PIC32MX370
  • PIC32MX430
  • PIC32MX450
  • PIC32MX470.

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