GTU BE 2019 Summer Question Papers || Gujarat Technological University
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Subject Code:151001
GUJARAT TECHNOLOGICAL UNIVERSITY
Date:17/06/2019
Subject Name:Microcontroller And Interfacing
Time:02:30 PM TO 05:00 PM
Total Marks: 70
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)
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)
(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)
(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)
(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)
Subject Code:151001
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE - SEMESTER- V(OLD) EXAMINATION - SUMMER 2019Date:17/06/2019
Subject Name:Microcontroller And Interfacing
Time:02:30 PM TO 05:00 PM
Total Marks: 70
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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)
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(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)
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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)
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Q4 (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)
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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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