Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 7th Sem New 2173203 Microprocessor And Microcontroller Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? VII (New) EXAMINATION ? WINTER 2019
Subject Code: 2173203 Date: 23/11/2019
Subject Name: Microprocessor and Microcontroller
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Write a short note on AVR Family 03
(b) Differentiate Microprocessor and Microcontroller.
04
(c) Draw and Explain architecture of the 8085 microprocessor 07
Q.2 (a) Why bus demultiplexing is required in processors and controllers.
Explain bus demultiplexing with neat sketch.
03
(b) Explain AVR status register in detail. 04
(c) Explain the Pin Diagram of the 8051 microprocessor. 07
OR
(c) Design a microcontroller memory interfacing system for 4Kbyte
RAM with starting address 0000H.Immediately connect 2Kbyte
EEPROM. Use 3-8 decoder and if gate is required.
07
Q.3 (a) Why it becomes necessary to make different segments of one
program? Explain the use of subroutines with suitable example.
03
(b) Write a short note on C Data types for the AVR C 04
(c) Explain and Draw the control signal generation in 8085
Microprocessor
07
OR
Q.3 (a) What is Assembler directive? Explain .EQU and .SET assembler
directive with example.
03
(b) Write a Program to get data from the PIN B and send it to the I/O
register of PORT C Continuously.
04
(c) Draw pin configuration of ATmega32 and Explain function of any
four pin.
07
Q.4 (a) Explain following instruction with example: SBI, SEZ, LDS 03
(b) Explain programming steps to Program Timer 0 in normal mode. 04
(c) Write a program to transmit the message ?GTU? serially at 9600 baud
rate, 8 bit data and 1 stop bit. Do this forever.
07
OR
Q.4 (a) Explain Rotate Instructions with example for the AVR controller. 03
(b) Explain the interfacing of 4x4 matrix key board with AVR. 04
(c) Draw and explain TCCR0 register in AVR in brief. 07
Q.5 (a) Explain Flag register of 8085 Microprocessor. 03
(b) Explain interfacing of AVR with an optoisolator. 04
(c) Write a program to generate a delay of 70?s. (Consider XTAL= 8
MHz, Timer 2)
07
OR
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? VII (New) EXAMINATION ? WINTER 2019
Subject Code: 2173203 Date: 23/11/2019
Subject Name: Microprocessor and Microcontroller
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Write a short note on AVR Family 03
(b) Differentiate Microprocessor and Microcontroller.
04
(c) Draw and Explain architecture of the 8085 microprocessor 07
Q.2 (a) Why bus demultiplexing is required in processors and controllers.
Explain bus demultiplexing with neat sketch.
03
(b) Explain AVR status register in detail. 04
(c) Explain the Pin Diagram of the 8051 microprocessor. 07
OR
(c) Design a microcontroller memory interfacing system for 4Kbyte
RAM with starting address 0000H.Immediately connect 2Kbyte
EEPROM. Use 3-8 decoder and if gate is required.
07
Q.3 (a) Why it becomes necessary to make different segments of one
program? Explain the use of subroutines with suitable example.
03
(b) Write a short note on C Data types for the AVR C 04
(c) Explain and Draw the control signal generation in 8085
Microprocessor
07
OR
Q.3 (a) What is Assembler directive? Explain .EQU and .SET assembler
directive with example.
03
(b) Write a Program to get data from the PIN B and send it to the I/O
register of PORT C Continuously.
04
(c) Draw pin configuration of ATmega32 and Explain function of any
four pin.
07
Q.4 (a) Explain following instruction with example: SBI, SEZ, LDS 03
(b) Explain programming steps to Program Timer 0 in normal mode. 04
(c) Write a program to transmit the message ?GTU? serially at 9600 baud
rate, 8 bit data and 1 stop bit. Do this forever.
07
OR
Q.4 (a) Explain Rotate Instructions with example for the AVR controller. 03
(b) Explain the interfacing of 4x4 matrix key board with AVR. 04
(c) Draw and explain TCCR0 register in AVR in brief. 07
Q.5 (a) Explain Flag register of 8085 Microprocessor. 03
(b) Explain interfacing of AVR with an optoisolator. 04
(c) Write a program to generate a delay of 70?s. (Consider XTAL= 8
MHz, Timer 2)
07
OR
2
Q.5 (a) With Fosc =8 MHz, Find the UBRR value needed to have the following
baud rates.
1. 9600
2. 4800
3. 2400
03
(b)
List various sources of AVR interrupts and their priorities. Explain steps
in enabling an interrupt.
04
(c) A switch is connected to pin PA7(PortA.7). Write a program to monitor
the status of the SW and perform the following.
1. If SW = 0, the stepper motor moves clockwise.
2. If SW = 1, the stepper motor moves anti clockwise.
07
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This post was last modified on 20 February 2020