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Microcontrollers Question Paper - Dec 18 - Electronics And Telecomm (Semester 5) - Pune University (PU)
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Microcontrollers - Dec 18
Electronics And Telecomm (Semester 5)
Total marks: 70
Total time: 150 mins
INSTRUCTIONS
(1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Draw neat diagrams wherever necessary.
1.a.
write a program for Transmission of SPPU continuously at baud rate of 9600
(6 marks)
00
1.b.
Draw and explain block schematic of logic analyzer.
(7 marks)
00
1.c.
Draw an interfacing diagram of stepper motor and write an ALP to rotate 90° clock wise and then anti- clock wise with highest delay generated by timer 1, mode 1.
(7 marks)
00
OR
2.a.
Draw and explain programming model of 8051 in detail.
(6 marks)
00
2.b.
Draw an interfacing diagram of multiplexed 7 segment display and write an ALP to display 99 with step delay of 1 msec (Timer 0. Mode 1)
(7 marks)
00
2.c.
Design and DAS to interface LED ,Switches , relay and buzzer , Write an ALP for satisfying the following conditions.
(7 marks)
00
i) s1 pressed - Relay ON, LEDON,Buzzer off,
ii) S2 Pressed ---- Relay on ,LED ON , Buzzer ON;
iii) s3 Pressed ------ Relay off, LED off, Buzzer off
3.b.
Draw and explain functional diagram of Timer I of PIC. Also differentiate between operating functions of timer 0, I and 2 of PIC.
(8 marks)
00
3.b.
Draw and explain the functional diagram of RESET in PIC.
(8 marks)
00
OR
4.a.
State features of PIC 18, draw and explain the flag structure of PIC in Detail.
(8 marks)
00
4.b.
Write a C18 program to generate square wave of 50 Hz continuously
using Timer 0, 16 bit and no prescaler. XTAL = 10 MHz.
(8 marks)
00
5.a.
Draw a neat interfacing diagram to display 'SPPU' on 4th position in line one and UNIVERSITY at 5th position on second line, write an
embedded C program.
(8 marks)
00
5.b.
Draw and explain the Compare mode of CCR module
(8 marks)
00
OR
6.a.
Write a program for 2.5 KHz and 75 % duty cycle PWM generation with N = 4, XTAL = 10 MHz.
(8 marks)
00
6.b.
Draw an interfacing diagram of LED connected to port B of PIC18F and write program embedded C program for Ring Counter.
(8 marks)
00
7.a.
Explain the 12C mode of MSSP structure used for serial communication.
(8 marks)
00
7.b.
Explain the use of BRGH register for calculation of Baud rates. Draw and explain UART transmitter block diagram.
(10 marks)
00
OR
8.a.
Draw an interfacing diagram to PIC-ADC for measuring temperature of
om and display on LCD, indicate over temperature by LED, buzzer
and relay connected to port, Write an C program for testing.
(8 marks)
00
8.b.
State features of RTC and draw an interfacing diagram with PIC
18FXXXX write an nitialization program.
(10 marks)
00
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