Duplicating Microchip PIC18F43K22 MCU Flash Program needs to crack microcontroller pic18f43k22 security fuse bit and extract encrypted code from microprocessor.

The LP, XT and HS modes support the use of quartz crystal resonators or ceramic resonators connected to OSC1 and OSC2 (Figure 2-6). The mode selects a low, medium or high gain setting of the internal inverter- amplifier to support various resonator types and speed.

LP Oscillator mode selects the lowest gain setting of the internal inverter-amplifier. LP mode current consumption is the least of the three modes. This mode is best suited to drive resonators with a low drive level specification, for example, tuning fork type crystals.

XT Oscillator mode selects the intermediate gain setting of the internal inverter-amplifier. XT mode current consumption is the medium of the three modes. This mode is best suited to drive resonators with a medium drive level specification.HS Oscillator mode offers a Medium Power (MP) and a High Power (HP) option selectable by the FOSC<3:0> bits.

The MP selections are best suited for oscillator frequencies between 4 and 16 MHz. The HP selection has the highest gain setting of the internal inverter- amplifier and is best  suited  for  frequencies  above 16 MHz when hacking microchip mcu pic18f26k80 secured flash. HS mode is best suited for resonators that require a high drive setting.

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