Protected Microcontroller PIC16LF1574 Memory Unlocking will be able to reverse engineer the locked fuse bit over PIC16LF1574 MCU flash memory, and then readout embedded firmware from microprocessor PIC16LF1574;
During interrupts, certain registers are automatically saved in shadow registers and restored when returning from the interrupt. This saves stack space and user code.
These devices have a hardware stack memory 15 bits wide and 16 words deep. A Stack Overflow or Under-flow will set the appropriate bit (STKOVF or STKUNF) in the PCON register for the sake of cloning microchip pic12f1571 mcu program, and if enabled, will cause a soft- ware Reset.
There are two 16-bit File Select Registers (FSR). FSRs can access all file registers and program mem- ory, which allows one Data Pointer for all memory. When an FSR points to program memory, there is one additional instruction cycle in instructions using INDF to allow the data to be fetched.
General purpose memory can now also be addressed linearly, providing the ability to access contiguous data larger than 80 bytes in the process of readout protected mcu pic12lf1571 firmware. There are also new instructions to support the FSRs.