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Reset Mechanisms STM32 microcontrollers support three primary reset categories: system reset, power-on reset, and backup domain reset. System reset encompasses five different reset sources, with the NRST pin reset being the most commonly used method in minimum system designs. This hardware reset triggers when the NRST pin is pulled low, resetti ...

1. Memory and Bus Architecture The STM32 architecture is built around a multi-layer bus matrix that facilitates communication between the Cortex-M3 core and various peripherals. Key components include: I-Code Bus: Fetches instructions from the Flash memory. D-Code Bus: Accesses data (constants) in Flash or variables in SRAM. System Bus (S-Bus) ...