nRF7002 DK v1.0.0

Virtual serial ports

The onboard interface MCU features two Universal Asynchronous Receiver/Transmitter (UART) interfaces through virtual serial ports.

Both virtual serial ports are connected to the nRF5340 System on Chip (SoC) and have the following features:

The following table shows an overview of the UART connections on nRF5340 SoC and the interface MCU.

Table 1. Relationships of UART connections on nRF5340 and interface MCU
Signal GPIO nRF5340 UART_1 GPIO nRF5340 UART_2
RTS P1.05 P0.19
TXD P1.01 P0.20
CTS P1.04 P0.21
RXD P1.00 P0.22

The UART signals are routed directly to the interface MCU. The UART pins connected to the interface MCU are tri-stated when no terminal is connected to the virtual serial port on the computer.

Note: The terminal software used must send a Data Terminal Ready (DTR) signal to configure the UART interface MCU pins.

Pins P0.19 (Request to Send (RTS)) and P0.21 (Clear to Send (CTS)) can be used freely when HWFC is disabled on the SoC.