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GUJARAT TECHNOLOGICAL UNIVERSITY
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BE- SEMESTER-V (NEW) EXAMINATION - WINTER 2020Subject Code:3150306 Date:29/01/2021
Subject Name:Microcontroller Programming & Interfacing
Time:10:30 AM TO 12:30 PM Total Marks: 56
Instructions:
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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) Enlist Characteristic of Embedded system 03
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(b) Compare Block diagram of Microprocessor and Microcontroller. 04(c) Draw and discuss Architecture of 8051uC. 07
Q.2 (a) Discuss Criteria for selecting Microcontroller. 03
(b) Explain Working of PORTO of 8051uC. 04
(c) Differentiate and explain between different Addressing modes of 8051uC. 07
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Q.3 (a) Draw Crystal Oscillator interfacing with ATMEGA 32 uC, Provide Capacitor 03
values for different frequencies.
(b) Treat registers R0 and R1 as 16 bit registers, and rotate them one place to the 04
left; bit 7 of R0 becomes bit 0 of R1, bit 7 of R1 becomes bit 0 of R0, and so on.
(c) Number FFh is placed somewhere in external RAM between locations 0100h 07
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and 0200h. Find the address of that location and put that address in R6 (LSB)and R7 (MSB).
Q.4 (a) Enlist features of ADC module of ATMEGA32uC. 03
(b) 8 devices are connected one with each pin of Port 1. Write a program to turn off 04
devices connected to pin 1.0 to pin 1.3 and turn on devices connected to pin 1.2
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and p1.7.(c) Set every third byte in internal RAM from address 20h to 7Fh to FFH 07
Q.5 (a) Explain ADCSRA Register of ATMEGA 32 uC. 03
(b) Draw and Explain ATmega 32 pin configuration. 04
(c) Write a C Program to display “BME” in 1st line and your name in 2nd line of 07
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LCD for ATMEGA-32 uC. Q.6 (a) Draw and explain 8-bit timer module. 03
(b) Explain STATUS Register of ATMEGA 32 uC. 04
(c) Write a C Program to interface Stepper Motor with ATMEGA 32 uC. 07
Q.7 (a) Explain UCSRA register of ATMEGA 32 uC. 03
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(b) What is Interrupt? Explain working of it in ATMEGA 32 uC. 04(c) Write a C program to generate square wave of 1 KHz using timer1. (Crystal 07
freq:8MHz)
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Firstranker's choice Q.8 (a) Enlist various interrupt sources of ATMEGA 32 uC. 03
(b) Write a C Program to Send and receive serial communication with computer at 04
19200 Baud.
(c) Explain Architecture of ATMEGA 32 uC. 07
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