Download GTU B.Tech 2020 Winter 5th Sem 3152409 Semester V (New) Question Paper

Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 5th Sem 3152409 Semester V (New) Previous Question Paper

Seat No.: ________
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?V (NEW) EXAMINATION ? WINTER 2020
Subject Code:3152409 Date:29/01/2021
Subject Name:Microcontrollers Architecture, Interefacing and Applications
Time:10:30 AM TO 12:30 PM Total Marks: 56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.


MARKS
Q.1 (a) Discuss (1) EEPROM (2) DRAM
03

(b) Draw the block diagram of microcontroller 8051.
04

(c) Why delay are required during programming and how they are generated?
07


Q.2 (a) Define bits of SCON & TCON registers.
03

(b) Define the terms: address bus, data bus and control bus.
04

(c) Explain SFR (Special Function Register) and PSW (Program Status Word).
07
Q.3 (a) State important criterion for the selection of microcontroller.
03

(b) Explain Instructions: LJMP, XCHD, CJNE, and NOP.
04

(c) Write a program to generate an output as a square wave with a frequency of 50 Hz
07
at P2.2 pin of 8051. Assume that the crystal frequency is 12MHz.




Q.4 (a) Explain TMOD register.
03

(b) Define instruction cycle, machine cycle & T-state.
04

(c) Write a program to Toggle all the LEDs ON and OFF (Blinking LEDs) with a
07
frequency of 01 Hz that are connected to PORT 01 of the 8051 Microcontroller.
Take crystal frequency of 12 Mhz.
Q.5 (a) What is the function of interrupts in 8051? List various interrupts available in 8051.
03

(b) Explain any two logical instructions of 8051 microcontroller.
04

(c) Explain different addressing modes of 8051 with example.
07



Q.6 (a) What do you mean by stack? Explain in brief w.r.t 8051.
03

(b) Write a brief note on DAC.
04

(c) Explain interfacing of 7-segment display with 8051 microcontroller.
07
Q.7 (a) Explain the Interfacing of LED with 8051.
03

(b) State the similarities and differences between following instructions.
04
ADD A, @R1 and ADD A, R1

(c) State various types of Jump and Loop instructions. Explain any three with
07
examples.



Q.8 (a) What is a subroutine in 8051? Explain in brief with a suitable short example.
03
(b) Compare vectored & non-vectored interrupts for 8051 microcontroller.
04
(c) Draw internal architecture of 8051 microcontroller. Discuss function of each block
07
in detail.

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