Microcontroller Boot Mode Selection Logic Circuit

The patent implements dynamic clock frequency adjustment during the boot sequence. The system starts with a reduced clock frequency to minimize power consumption and automatically transitions to a higher frequency once the microcontroller is fully initialized and operational. This dynamic approach allows the system to optimize between power saving and boot speed at different stages of the boot process.

The patent employs periodic monitoring of boot status to determine when to switch from low-power mode to full-operation mode. The system periodically checks whether the boot sequence is complete and uses this information to transition between different operational states, ensuring that peripherals are activated at the appropriate timing rather than continuously.

The patent performs preliminary initialization of critical components during the reset sequence before enabling all peripherals. The microcontroller first initializes its internal registers, memory, and essential control logic, then progressively enables peripherals based on their power consumption characteristics and operational requirements. This staged approach ensures system functionality is established with minimal power consumption.

The patent segments the peripheral activation process into distinct phases during the reset sequence. Rather than enabling all peripherals simultaneously, the system divides peripheral initialization into multiple stages, activating low-power peripherals first and subsequently enabling higher-power peripherals only when necessary and when the power budget allows.