Download GTU BE/B.Tech 2018 Winter 5th Sem New 2150907 Microprocessor And Microcontroller Architecture And Interfacing Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-V (NEW) EXAMINATION - WINTER 2018

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Subject Code:2150907 Date:16/11/2018
Subject Name:Microprocessor and Microcontroller Architecture & Interfacing
Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:
1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

MARKS

Q.1 (a) Compare Van Neumann and Harvard Architecture. 03
(b) Define addressing mode. List different addressing modes of 04

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8051 with example.
(c) Draw and explain architectural block diagram of 8051. 07

Q.2 (a) List different modes of Timers and show bit structure of TMOD 03
and TCON register.
(b) Explain PSW register in brief. 04

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(c) Write an Assembly language program to find number of 1’s and 07
0’s from a given 8 bit data.
OR
(c) Write an Assembly language program to copy block of 8 bit data 07
stored at 40h-44h memory location into 50h-54h Memory

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locations.

Q.3 (a) Explain function of following pins: 03
(A) TRAP
(C) HOLD
(D) READY

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(b) Give Bit format of PSW in 8051. Explain bit significance of each 04
bit.
(c) Prepare a timing diagram for instruction MOV A, B. 07
OR
Q.3 (a) For an 8051 system of 11.0592MHZ, Find how long it takes to 03

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execute following instructions:
DEC R3, LJMP, MUL AB
(b) Write an 8051 C program to turn bit p0.5 on and off 10,000times. 04
(c) Write an assembly language program to convert HEX number in 07
unpacked BCD number .Store the result into Memory locations

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30H onwards.

Q.4 (a) Enlist 8051 interrupts with vector address according to Priority. 03
(b) Explain IE and IP register in brief. 04
(c) Write an assembly language program to generate square wave of 07
50HZ frequency on pin 1.2 using Timer 0 ,Model and assume

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XTAL=11.0592MHZ
OR
Q.4 (a) Draw logic diagram to generate control signal necessary for 03
interfacing with memory chip.
(b) Explain demultiplexing of Address/data lines in 8085. 04

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Q.5 (a) Explain tri state logic devices in brief. 03
(b) Write a short not on different type of Memory. 04
(c) Draw and explain LCD interfacing circuit. 07
OR

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Q.5 (a) Compare CISC and RISC processor. 03
(b) Write a C program for 8051 to transfer letter “A” serially at 9600 04
baud rate continuously.
(c) Give a complete scheme to interface an 8 bit ADC to 8051 07
microcontroller.

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