UPDI

The UPDI interface uses one pin to communicate with the target. For further information on how to use the programming and debugging capabilities of the EDBG, see Embedded Debugger.

Table 1. UPDI Connections
ATmega4809 Pin Function Shared Functionality
UPDI UPDI programming/debugging DEBUG
PF6 RESET SW1, EXT1, DEBUG
Info: PF6 (RESET) is usually not used by the EDBG as the ATmega4809 can be reset through the UPDI interface.
Parent topic: Embedded Debugger Implementation