3.5.10.1 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 3-11. On-Board Debugger Connections
ATmega3208 PinDebugger PinFunctionShared Functionality
PF1CDC TXUART2 RX (ATmega3208 RX line)—
PF0CDC RXUART2 TX (ATmega3208 TX line)—
UPDIDBG0UPDI—
PF4DBG1DEBUG GPIO1Data LED
PF3DBG2DEBUG GPIO0SW0 and RN4870