Copy microcontroller PIC18F6621 embedded eeprom starts from break secured MCU microchip PIC18F6621 tamper resistance system and extract embedded firmware of binary file or heximal source code from locked microprocessor PIC18F6621 flash program memory and eeprom data memory;

We can Copy Microcontroller PIC18F6621 Embedded Eeprom, please view the Microcontroller PIC18F6621 features for your reference:

When the interrupt-on-change feature is enabled, only pins configured as inputs can cause this interrupt to occur (i.e., any RB2, RB3, RA0 and RA1 pin configured as an output is excluded from the interrupt-on-change comparison). The input pins (RB2, RB3, RA0 and RA1) are compared with the old value latched on the last read of PORTA and PORTB for the purpose of Extract MCU PIC16LF747 Code. 

The “mismatch” outputs of these pins are ORed together to generate the RB Port Change Interrupt with Flag bit, RBIF (INTCON<0>). This interrupt can wake the device from Sleep mode, or any of the Idle modes. The user, in the Interrupt Service Routine, can clear the interrupt in the following manner when Copy Microcontroller PIC18F6621 Embedded Eeprom:

A mismatch condition will continue to set flag bit, RBIF. Reading PORTA and PORTB will end the mismatch condition and allow flag bit, RBIF, to be cleared. The interrupt-on-change feature is recommended for wake-up on key depression operation and operations where PORTA and PORTB are used for the interrupt-on-change feature to faciliate the process of Read IC PIC16LF747 Heximal. Polling of PORTA and PORTB is not recommended while using the interrupt-on-change feature.

The PIC18F1230/1330 devices have multiple interrupt sources and an interrupt priority feature that allows most interrupt sources to be assigned a high priority level or a low priority level only after Extract Chip PIC16F747 Code. The high priority interrupt vector is at 0008h and the low priority interrupt vector is at 0018h. High priority interrupt events will interrupt any low priority interrupts that may be in progress before Copy Microcontroller PIC18F6621 Embedded Eeprom.

There are thirteen registers which are used to control interrupt operation. These registers are:
RCON
INTCON
INTCON2
INTCON3
PIR1, PIR2, PIR3
PIE1, PIE2, PIE3
IPR1, IPR2, IPR3

It is recommended that the Microchip header files supplied with MPLAB® IDE be used for the symbolic bit names in these registers by Crack MCU. This allows the assembler/compiler to automatically take care of the placement of these bits within the specified register.