ST IC MCU STM32F051R6 Flash Memory Unlocking is a process to attack the readout protection over microcontroller stm32f051r6 memory, and then extract memory data from chip stm32f051r6;
Each of the GPIO pins can be configured by software as output (push-pull or open-drain), as input (with or without pull-up or pull-down) or as peripheral alternate function. Most of the GPIO pins are shared with digital or analog alternate functions. The I/O configuration can be locked if needed following a specific sequence in order to avoid spurious writing to the I/Os registers.
The 5-channel general-purpose DMAs manage memory-to-memory, peripheral-to-memory and memory-to-peripheral transfers which can be used for flash source code extraction from stm32f051k4 chip memory.
The DMA supports circular buffer management, removing the need for user code intervention when the controller reaches the end of the buffer.
Each channel is connected to dedicated hardware DMA requests, with support for software trigger on each channel. Configuration is made by software and transfer sizes between source and destination are independent. DMA can be used with the main peripherals: SPIx, I2Sx, I2Cx, USARTx, all TIMx timers (except TIM14), DAC and ADC.
The STM32F0xx family embeds a nested vectored interrupt controller able to handle up to 32 maskable interrupt channels for the sake of breaking stm32f051c6 mcu chip memory protection (not including the 16 interrupt lines of Cortex®-M0) and 4 priority levels.
This hardware block provides flexible interrupt management features with minimal interrupt latency.