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EndsemMay 20252019 patternTE Electrical

Microcontrollers and Embedded Systems (MES) SPPU Endsem Question Paper May 2025

All 8 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated MES questions
Subject code
303145A
Pattern
2019 pattern
Exam
Endsem
Session
May 2025
Max. marks
70
Time
2½ Hours
Semester
V
Paper code
[6403]-65

Printed for: T.E. (Electrical)

Instructions to the candidates

  1. Answer Q.1 or Q.2, Q.3 or Q.4, Q.5 or Q.6, Q.7 or Q.8.
  2. Neat diagrams must be drawn wherever necessary.
  3. Figures to the right indicate full marks.
  4. Use of calculator is allowed.
  5. Assume suitable data if necessary.

Questions

  1. Q1

    1. a)

      List out timers used for CCP module in PIC18F458. Also explain CCP registers used in detail.

      Also asked:Nov 2023

      [8]
    2. b)

      Write embedded C program to generate PWM of 5KHz with 40% duty cycle and Prescalar N=4.

      [9]

  2. Q2

    1. a)

      Draw CCP1CON and list the steps involved in programming PIC18F458 microcontroller in PWM mode.

      Also asked:Nov 2023 ·May 2023

      [8]
    2. b)

      How DC motor speed control is achieved using PWM mode of CCP module of PIC18F458.

      Also asked:Nov 2024 ·Nov 2023

      [9]

  3. Q3

    1. a)

      Write a short note on interrupt structure of PIC18F458 microcontroller.

      Also asked:Nov 2024

      [9]
    2. b)

      Assuming crystal frequency = 10MHz, write a program in C language to generate square wave form with a frequency of 25kHz on PORTB.4. Use timer 0 in 8bit mode without a prescalar. 2

      [9]

  4. Q4

    1. a)

      Enlist Interrupt registers in PIC18F458.Explain any two.

      Also asked:Nov 2023 ·May 2023

      [9]
    2. b)

      Write a C Program for PIC18 toggle the LED connected to pin7 of the PORT B every time INT0 is activated by a switch connected at INT0(RB0). Assume XTAL=10MHz.

      Also asked:May 2023

      [9]

  5. Q5

    1. a)

      Explain in detail the function of following flags related to on board ADE of PIC microcontroller: i) ADIF ii) Go/Done iii) ADFM iv) ADON

      Also asked:Nov 2023

      [8]
    2. b)

      With the help of interfacing diagram and flow chart, explain how PIC microcontroller can be used to measure temperature using LM35 sensor.

      Also asked:Nov 2023

      [9]

  6. Q6

    1. a)

      Explain features of on-board ADC of PIC18F458. Also explain in detail the functions of ADIF and ADFM bits.

      Also asked:May 2023

      [8]
    2. b)

      Draw a neat diagram and flow chart, explain AC voltage measurement using PIC microcontroller. 3

      Also asked:Nov 2023

      [9]

  7. Q7

    1. a)

      Write a C program for the PIC18 to transfer the message “A” serially at 9600 baud, 8-bit data,1 stop bit. Do this continuously. Assume XTAL=10MHz.

      Also asked:Nov 2025 ·Nov 2024 ·May 2024 ·Nov 2023

      [9]
    2. b)

      List the steps for programming PIC18 to receive the data serially.

      Also asked:Nov 2025 ·May 2023

      [9]

  8. Q8

    1. a)

      Compare serial and parallel data transfer. Also list the registers associated with transmission and reception modes of USART.

      [9]
    2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [9]