"Reset Is a System Function" This video explains why reset in an embedded system should be treated as a system-level reliability function, not simply a microcontroller pin. It examines how real-world power conditions such as slow voltage ramps, brownouts, supply interruptions, and noisy power can cause intermittent startup and recovery failures that may never appear during laboratory testing. The video covers the limitations of simple RC reset circuits, the roles of voltage supervisors and watchdogs, safe GPIO states during startup, and the importance of coordinating electrical readiness with firmware initialization. It also presents boot as a controlled state machine, discusses robust fault recovery and persistent reset diagnostics, and highlights practical validation techniques for detecting failures hidden by development tools. The central message is that a reliable product must deliberately separate unsafe electrical and logical states from conditions in which normal operation can be trusted. #embeddedsystem #MCU #SoC