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TOOL IDB-SWE-008
Flash & RAM budget

Desktop only

Engineering tools are available only on desktop screens.

Flash & RAM budget

Plan firmware flash and RAM across application, libraries, bootloader, OTA, and headroom. Flags when you blow the MCU budget.

MCU memory map flash & ram
FLASH 256 KB RAM 64 KB 0x...FFFF 0x...0000 stack top .data base App RTOS OTA Boot Free App RAM Stack
Engineering notes

Targets

  • Keep 20% flash and 30% RAM headroom for future features and OTA.
  • Bootloader sector is fixed — don't overlap with app.
  • OTA slot must fit the largest application image.
  • FreeRTOS heap ≈ task stacks + queue buffers + semaphores. Size with vApplicationStackOverflowHook enabled.

Result

Live