Microcontroller Architecture & Memory-Mapped I/O

How a microcontroller's CPU, memory, and peripherals are organized around a single address space, and the architectural tradeoffs between common MCU families.

Read

54 min

Practice MCQs

25

Interview QA

25

Edition

v3

Editorial status

Reviewed

Relevant for

Embedded Systems Engineer

Scope: Arm CMSIS 6 and Cortex-M programmer guidance; Linux MMIO ordering/accessor guidance; STM32 Cortex-M4 programming manual reviewed 2026-09-04.