Revision Interrupt

What is an interrupt in the context of microcontrollers?

• A software error

• A hardware signal that temporarily halts the normal program flow

• A type of memory corruption

• A method for increasing power consumption

Which register is used to enable interrupts in the PIC18F4550?

• INTCON register

• PIR1 register

• TMR0 register

• PORTA register

Which interrupt priority level has the highest priority in the PIC18F4550?

• Low priority

• Medium priority

• High priority

• There is no priority scheme

What happens when an interrupt occurs in the PIC18F4550 microcontroller?

• The microcontroller resets

• The current instruction is completed before servicing the interrupt

• The microcontroller ignores the interrupt

• The interrupt immediately jumps to the interrupt service routine (ISR)

How can you clear a specific interrupt flag in the PIC18F4550?

• By writing to the INTE register

• By writing to the INTCON register

• By writing to the PIR1 register

• By writing to the PIE1 register

Which of the following is NOT a type of interrupt available in the PIC18F4550?

• Timer interrupt

• External interrupt

• Serial communication interrupt

• Loop interrupt

What is the purpose of the Interrupt Service Routine (ISR) in the PIC18F4550?

• To initialize the interrupt hardware

• To handle the interrupt event

• To disable other interrupts

• To generate interrupt signals

In the PIC18F4550, how can you prioritize interrupts?

• By setting specific bits in the interrupt control register

• By setting specific bits in the timer register

• By configuring the oscillator settings

• By adjusting the power-saving mode

Which register is used to enable specific interrupt sources in the PIC18F4550?

• INTCON register

• PIR1 register

• TMR0 register

• PIE1 register

What precaution should be taken when writing the Interrupt Service Routine (ISR) for the PIC18F4550?

• The ISR should be as long as possible to handle all potential interrupt scenarios

• The ISR should avoid modifying any critical system registers

• The ISR should always disable interrupts to prevent nested interrupts

• The ISR should rely solely on polling methods for efficiency.