
.. ditaa::
    :--no-separation:
    :name: ext_flash_layout_mcuboot_1

        External Flash
     +--------------------+ <- EFL_SIZE
     |                    |
     |                    |
     |                    |
     |      Variable      |
     |   space for user   |
     |    applications    |
     |       c777         |
     |                    |
     |                    |
     |                    |
     |                    |
     +--------------------+ <- BOOT_SECONDARY_1_SIZE
     |  Download          |
     |  Application       | Secondary Slot
     |      c7AF          |
     |                    |
     |                    |
     |                    |
     |                    |
     +--------------------+
     | Download           |
     | Application Header |
     | c7AF               |
     +--------------------+ <- 0x00000000
