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Microcontrollers Question Paper - Jun 18 - Electronics And Telecomm (Semester 5) - Pune University (PU)
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Microcontrollers - Jun 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.
Draw and explain the internal memory organization of 8051 in detail.
(6 marks)
00
1.b.
Draw an interfacing diagram of ADC O809 with 8051 and write an ALP to accept data from sensor connected to channel 5 and store current reading in register B.
(7 marks)
00
1.c.
Draw an diagram of DAC to generate the square wave of
5KHz (Use Timerl, mode 2)
(7 marks)
00
OR
2.a.
Draw and explain port structure of 8051 microcontroller
(6 marks)
00
2.b.
With the help of neat block diagram explain the operation of Logic analyzer
(7 marks)
00
2.c.
Design a DAS for accepting digital input from 4 x 4 keypad and display the state of key pressed by glowing lamp connected with Opto-Isolator and LED connected to relay at PII. Draw flow chart.
(7 marks)
00
3.a.
State features of PIC and explain with example functioning of ALU in PIC18 for transfer of data
(8 marks)
00
3.b.
Explain the power down modes of PIC
(8 marks)
00
OR
4.a.
Draw and explain the RESET functional diagram with causes
(8 marks)
00
4.b.
Write a C1s program to tougle all bits of Port B continuously with delay of 10 ms using Timer 0, 16 bit and no presclar XTAL = 10 MHz
(8 marks)
00
5.a.
Draw and explain the Legacy and Priority mode of PIC interrupts.
(8 marks)
00
5.b.
Draw an interfacing diagram to interface the DC motor with PIC 18FXxx for speed control using PWM with 5KHz, 40% Duty cycle.N=4, Also Write an embedded C Program.
(8 marks)
00
6.a.
Draw interfacing diagram of LCD with PIC 18FXXXX, and write an C
program to display SPPU on first line with offset of 6
(8 marks)
00
6.b.
Explain in detail with block schematic of Compare mode of CCP module
(8 marks)
00
OR
7.a.
Draw and explain the 12C mode of the MSSP structure in detail
(8 marks)
00
7.b.
State features of RTC and draw an interfacing diagram with PIC, write an initialization program
(10 marks)
00
OR
8.a.
Explain the use of BRG register for calculation of baud rate with UART block diagram
(8 marks)
00
8.b.
Design a Home alarm system considering the parameters of door safety
using sensors for detection of person and its movements, Display warning
on LCD and L ED, light the Lamp connected with Opto-oscillator Draw the Flowchart with initialization program
(10 marks)
00
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