Download GTU B.Tech 2020 Winter 7th Sem 2172001 Microcontrollers And Embedded Systems Question Paper

Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 7th Sem 2172001 Microcontrollers And Embedded Systems Previous Question Paper

Seat No.: ________
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?VII (NEW) EXAMINATION ? WINTER 2020
Subject Code: 2172001 Date:19/01/2021
Subject Name: Microcontrollers and Embedded Systems
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) Draw block diagram of a generalized embedded system.
03

(b) Describe the challenges faced in Embedded system design.
04

(c) Write a note on serial interface protocols (i) I2C (ii) SPI
07


Q.2
(a) How can one access code ROM space in 8051?
03

(b) Define checksum byte. Why is checksum operation performed & how?
04

(c) Draw & explain RS-232 connections to Atmel 8051.
07




Q.3
(a) Explain the bits of TCON SFR that are related to interrupts.
03

(b) Draw a neat interfacing diagram of ADC0848 with Atmel 8051.
04

(c) An external pulse train is connected to pin T0. WAP in C to display the
07
count on ports P1 & P2.




Q.4
(a) Enlist the types of interrupts in 8051 with priority & vector address.
03

(b) WAP in C to convert BCD to decimal & display the value on ports P1,
04
P2 & P3.

(c) WAP in C to rotate stepper motor in an 8-step sequence.
07



Q.5
(a) Explain the instructions related to subroutines in PIC18F4xx.
03

(b) Explain PORTA functions of PIC18F4xx.
04

(c) Interface 7-segment display with PIC18F4xx.
07



Q.6
(a) Differentiate between SFR, FSR & BSR.
03

(b) Enlist & explain the addressing modes of PIC18F4xx with examples.
04

(c) How can data be transferred from program memory to data memory in
07
PIC18F4xx? Illustrate with an example.



Q.7
(a) Explain bit configuration of T0CON SFR of PIC18F4xx.
03

(b) State the machine control instructions.
04

(c) Write an ALP to generate a square wave of 10kHz on RC0 port pin,
07
given clock frequency of 40MHz.



Q.8
(a) State the name & function of SFRs related to I/O ports in PIC18F4xx.
03
(b) Explain the bit pattern of IPR1 & PIE1 SFRs of PIC18F4xx.
04
(c) An array of 10 data is stored at addresses beginning from 0x100 in
07
PIC18F4xx. Write an ALP to square those numbers & store them at
addresses beginning from 0x120.

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