4.2 On-Board Debugger Connections

The table below shows the connections between the target and the debugger section. All connections between the target and the debugger are tri-stated as long as the debugger is not actively using the interface. Hence, since there are little contaminations of the signals, the pins can be configured to anything the user wants.

For further information on how to use the capabilities of the on-board debugger, see On-Board Debugger Overview.

Table 4-3. On-Board Debugger Connections
ATmega4808 PinDebugger PinFunctionShared Functionality
PF1CDC TXUART2 RX (ATmega4808 RX line)—
PF0CDC RXUART2 TX (ATmega4808 TX line)—
UPDIDBG0UPDI—
PF6DBG1DGI GPIO0SW0
PF5DBG2DGI GPIO1SW1