Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 5th Sem 2150306 Microcontroller And Interfacing (Biomedical) Previous Question Paper
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?V (NEW) EXAMINATION ? WINTER 2020
Subject Code:2150306 Date:20/01/2021
Subject Name:Microcontroller & Interfacing (Biomedical)
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) Explain special features of 8051 microcontroller.
03
(b) Explain various Special function registers of 8051 microcontroller.
04
(c) Explain with neat diagram internal port pin structure and its working
07
of Port 0,1,2, &3. Explain in which port we require pull up registers
and why?
Q.2 (a) Explain why do we write LJMP instruction normally at 0000H
03
address location?
(b) With neat schematic show how will you interface 16K ROM and 16
04
K RAM with 8051 microcontroller. Give the address range for the
same.
(c) Write a program in which the 8051 reads data from P1 and writes it
07
to P2 continuously while giving a copy of it to the serial COM port to
be transferred serially. Assume that Crystal frequency is 11.0592MHz
and baud rate is set at 4800.
Q.3 (a) Explain the difference between low-level and edge triggered
03
interrupts.
(b) A stepper motor uses the following sequence of binary numbers to
04
move the motor. How would you generate them?
1100,0110,0011,1001
(c) Write a program using interrupts to get data from P1 and send it to P2
07
while timer 0 is generating square wave of 3 KHz.
Q.4 (a) Explain bank structure of 8051 microcontroller.
03
(b) Which baud rates will be generated if 12MHz crystal is used instead
04
of 11.0592MHz with 8051 microcontroller.
(c) Write a program to generate a square wave of 100 Hz Frequency on
07
pin P1.3. Assume crystal frequency of 11.0592MHz.
Q.5 (a) Explain with neat schematic Timer/counter control logic.
03
(b) Explain various serial data transmission modes of 8051
04
microcontroller.
(c) Interface ADC 0804 with 8051 microcontroller and write a program
07
to fetch data from ADC every 1 sec. using port P1 and sending data
on port P0.
Q.6 (a) Explain various Interrupts used in 8051.
03
(b) Explain various Timer operation modes in 8051 microcontroller.
04
(c) Interface a simple stepper motor with 8051 and write a program to
07
rotate it continuously.
1
Q.7 (a) Explain various addressing modes of 8051 with example,
03
(b) Write a program to read 200 bytes of data from Port P1 and save the
04
data in external RAM starting at RAM location C000H.
(c) Interface 16*2 LCD with 8051 microcontrollers and write a program
07
to display word "HELLO".
Q.8 (a) Explain with example the relative and absolute ranges used with jump
03
instruction in 8051 microcontrollers.
(b) Write a program to create square wave that has a high portion of
04
1085uS and a low portion of 15uS using timer 1. Assume crystal
frequency of 11.0592MHz.
(c) Explain with neat diagram architecture of 8051 microcontroller.
07
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This post was last modified on 04 March 2021