Datasheet

Figure 31-2. Memory Sections

Related Links

Boot Loader Parameters

31.5 Entering the Boot Loader Program

Entering the boot loader takes place by a jump or call from the application program. This may be initiated

by a trigger such as a command received via USART or SPI interface. Alternatively, the boot Reset fuse

can be programmed so that the Reset vector is pointing to the boot Flash start address after a reset. In

this case, the boot loader is started after a Reset. After the application code is loaded, the program can

start executing the application code. The fuses cannot be changed by the MCU itself. This means that

once the boot Reset fuse is programmed, the Reset vector will always point to the boot loader Reset and

the fuse can only be changed through the serial or parallel programming interface.

ATmega328PB

BTLDR - Boot Loader Support – Read-While-Wri...

Datasheet Complete

DS40001906C-page 370