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Decoding ARM STM32F031K4 Microcontroller Flash memory and extract embedded heximal file from mcu stm32f031k4 flash memory, the fuse bit of microprocessor stm32f031k4 will be reversed;

The STM32F031x4/x6 microcontrollers support three low-power modes to achieve the best compromise between low power consumption, short startup time and available wakeup sources:

·            Sleep mode

In Sleep mode, only the CPU is stopped. All peripherals continue to operate and can wake up the CPU when an interrupt/event occurs.

·            Stop mode

Stop mode achieves very low power consumption while retaining the content of SRAM and registers. All clocks in the 1.8 V domain are stopped, the PLL, the HSI RC and the HSE crystal oscillators are disabled to crack stm32f031g4 arm microprocessor flash protection. The voltage regulator can also be put either in normal or in low power mode.

The device can be woken up from Stop mode by any of the EXTI lines. The EXTI line source can be one of the 16 external lines, the PVD output, RTC, I2C1 or USART1.

USART1 and I2C1 peripherals can be configured to enable the HSI RC oscillator so as to get clock for processing incoming data. If this is used when the voltage regulator is put in low power mode, the regulator is first switched to normal mode before the clock is provided to the given peripheral.

·            Standby mode

The Standby mode is used to achieve the lowest power consumption. The internal voltage regulator is switched off so that the entire 1.8 V domain is powered off. The PLL, the HSI RC and the HSE crystal oscillators are also switched off by unlocking microcontroller stm32f031k6 flash memory. After entering Standby mode, SRAM and register contents are lost except for registers in the RTC domain and Standby circuitry.

The device exits Standby mode when an external reset (NRST pin), an IWDG reset, a rising edge on the WKUP pins, or an RTC event occurs.Note:      The RTC, the IWDG, and the corresponding clock sources are not stopped by entering Stop or Standby mode.