External Interrupts in PIC 16C61 / 71 - MCQs with answers

External Interrupts in PIC 16C61 / 71 - MCQs with answers

1. What kind of external edge-sensitive interrupt is generated due to transition effect at pin RBO/ INT ?

a. INT
b. RBO
c. INTF
d. All of the above

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2. Which bit-register pair plays a significant role in configuring the rising or falling edge triggering levels in external interrupts of PIC 16C61/71 ?

a. INTF bit - INTCON register
b. INTEDG bit - OPTION register
c. INT bit -INTCON register
d. INTE bit - OPTION register

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3. Consider the following statements . Which of them is /are incorrect?

A. By enabling INTE bit of an external interrupt can wake up the processor before entering into sleep mode

B. INTF bit is set in INTCON only when a valid interrupt signal arrives at INT pin

C. During the occurrence of interrupt, GIE bit is set in order to prevent any further interrupts.

D. goto instruction written in program memory cannot direct the program control to ISR

a. A & B
b. C & D
c. Only A
d. Only C

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