Download GTU BE/B.Tech 2019 Summer 5th Sem Old 151001 Microcontroller And Interfacing Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 5th Sem Old 151001 Microcontroller And Interfacing Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? V(OLD) EXAMINATION ? SUMMER 2019
Subject Code:151001 Date:17/06/2019

Subject Name:Microcontroller And Interfacing

Time:02:30 PM TO 05:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

Q.1 (a) List the addressing modes of 8051 and explain register indirect and indexed
addressing mode in detail with assembly language example.
07
(b) Explain the 8051 architecture with block diagram. 07

Q.2 (a) Draw and Describe function of each pins of DIP-51 Intel 8-bit microcontroller. 07
(b) Explain with interfacing diagram, 7 segment interfacing with 8051 and write a
program to display data accordingly.
07
OR
(b) Interface 16Kbytes EPROM and 8Kbytes RAM to 8051. List instructions
related to external data move with at least one example.
07

Q.3 (a) Describe TMOD and TCON Special Function registers. 07
(b) Write a program for 8051 to transfer "YES" serially at 9600 baudrate, 8 bit
data, 1 stop bit. Do this continuously.
07
OR
Q.3 (a) Explain following instructions of 8051 family microcontroller:
MOVX, XCH, RRC, DAA, JBC, NOP, RET
07
(b) Write a program to generate a square wave of 2KHz frequency on pin P1.5.
Take XTAL=11.592MHz. Use Timer-0 in mode-1.
07

Q.4 (a) Write 8051 C -program to convert ASCII code of '4' and '7' to packed BCD and
display them on port P1.
07
(b) Write an ALP using interrupt, in which 8051 gets data from P1 and sends it to
P2 continuously while incoming data from serial port is sent to P0.Assume
XTAL =11.592 MHz. Set Baud rate of 9600.
07
OR
Q.4 (a) Write a program for 8051 to copy block of 10 bytes data from 35H to 60H. 07
(b) Explain with necessary sketch, interfacing the LCD with 8051 and write a C
program to Display ?WELCOME? in the first line and in centre of the 16X2
line display.
07

Q.5 (a) Explain interfacing of stepper motor with microcontroller. Write program to
rotate stepper motor in clockwise direction continuously in full step mode.
07
(b) Explain with diagram of interfacing, ADC 0804 in external clock mode
interfaced with 8051.Write steps to program ADC 0804.
07
OR
Q.5 (a) Discuss RTC interfacing with 8051. Write program to get values of hour, minute
and second from RTC to RAM location 20h,21h and 22h respectively.
07
(b) Interface the DAC 0808 chip to port-1 of 8051 mocrocontroller. Write an ALP
to generate sine wave
07

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