35.3.2 Operation
The UPDI must be enabled before the UART communication can start.
However, PDICFG and LOCK fuses can limit the UPDI access, while the bootloader can still negotiate firmware updates.
The UPDI must be enabled before the UART communication can start.
However, PDICFG and LOCK fuses can limit the UPDI access, while the bootloader can still negotiate firmware updates.
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