1.3.2 SPI Bootloader System Level Execution Flow

Bootloader system level execution flow

• The Bootloader code starts executing on a device Reset

• If there are no conditions to enter the Firmware Upgrade mode, the Bootloader starts executing the user application

  • Refer to the Bootloader Trigger Methods for different conditions to enter Firmware Upgrade mode

• The Bootloader performs Flash erase/program operations while in the Firmware Upgrade mode