4.3.2 Virtual COM Port

The Embedded Debugger acts as a Virtual Com Port gateway by using one of the ATSAML21J18B UARTs. For further information on how to use the Virtual COM port, see Embedded Debugger.

Table 4-14. Virtual COM Port Connections
SAM L21 pinFunctionShared functionality
PA22SERCOM3 PAD[0] UART TXD (SAM L21 TX line)-
PA23SERCOM3 PAD[1] UART RXD (SAM L21 RX line)-