STM32F407VGT6Memory Map Explorer

ARM Cortex-M4 — 4 GB Address Space

The processor sees everything as addresses in one flat 4 GB space.

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0x00000000–0x1FFFFFFF

Code RegionICode + DCode☆

Flash, boot ROM, vector table

512 MB

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0x20000000–0x3FFFFFFF

SRAM RegionSystem bus☆

Working memory, stack, heap, variables

512 MB

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0x40000000–0x5FFFFFFF

Peripheral RegionSystem busXN☆

GPIO, timers, UART, SPI, I2C, ADC…

512 MB

0x60000000–0x9FFFFFFF

External RAMSystem bus☆

On STM32F4: addressable via FSMC (Flexible Static Memory Controller) as banks 1–4 for off-chip NOR/PSRAM/NAND/PCCARD. Discovery board: no external memory chips connected, so no usable storage here.

1 GB

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0xA0000000–0xDFFFFFFF

External DeviceSystem busXN☆

Starts with FSMC control registers (AHB3) at 0xA0000000. Rest unused on Discovery board.

1 GB

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0xE0000000–0xE00FFFFF

Private Peripheral BusPPBXN☆

ARM core peripherals: NVIC, SysTick, SCB (operational); ITM, DWT, FPB, TPIU, ETM, Core Debug, ROM Table (debug/trace).

1 MB

0xE0100000–0xFFFFFFFF

Vendor-specificSystem bus☆

Not used

511 MB

LEGEND

▶ Click to expandXN = Execute NeverDISC = Wired on Discovery board🔑 = RCC clock enable bit☆ = BookmarkHover 350ms = peek inside

MAP

CODE

SRAM

PERI

EXTE

PRIV

VEND