M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
Third Semester
Electronics
PIC MICROCONTROLLER AND EMBEDDED SYSTEMS
(CBCS 2015 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. What are the groups of instruction set in PIC
microcontroller?
2. Write the benefits of having RISC architecture.
3. What are modes of operation of timers in PIC
microcontroller?
4. How do you make a port as I/P and O/P port in PIC
microcontroller?
5. What is the purpose of interrupt vector table?
6. Define the interrupt priority of the PIC18.
7. Which register is used to choose the timer for the
Compare mode?
8. Which timer can be used for PWM mode for the standard
CCP1?
9. Describe the functions of the pins of 2X16 LCD.
10. Which register of the PIC18 is used to select the A/D
conversion speed?
Sub. Code
5MEL3C1
AFF-5069
2
Ws5
Part B x 5 25)
Answer all questions.
11. Describe the function of Status Register bits.
Or
Write a PIC assembly delay program and describe
delay calculations.
12. Discuss briefly how serial interfacing is
accomplished in PIC.
Or
List and explain the hardware features of timer 1 in
PIC18 with neat diagram.
13. Contrast and compare interrupts versus polling.
Or
Explain how to use interrupts to program the PIC18
timers.
14. Explain how the compare feature of CCP and ECCP
modules works.
Or
Write a PIC18 C program to create PWM.
15. Explain how to interface a relay with PIC18 with
neat diagram.
Or
Explain how to interface a stepper motor with
PIC18 with neat diagram.
AFF-5069
3
Ws5
Part C x 10 30)
Answer any three questions.
16. With a neat diagram, explain the architecture of PIC18
microcontroller.
17. Draw PIC18 connection to RS232 and explain serial port
programming.
18. Explain the interrupt structure of PIC18 with all the
registers associated with the interrupts.
19. Draw and explain compare, capture and PWM module
1 and 2 of PIC microcontroller with their associative
register.
20. Explain the sensor interfacing using PIC18
microcontroller.
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