Download GTU B.Tech 2020 Winter 5th Sem 3152409 Semester V (New) Question Paper

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Subject Code: 3152409

GUJARAT TECHNOLOGICAL UNIVERSITY

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BE- SEMESTER-V (NEW) EXAMINATION - WINTER 2020

Date: 29/01/2021

Subject Name: Microcontrollers Architecture, Interfacing and Applications

Time: 10:30 AM TO 12:30 PM

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.

Q.1

1. Discuss (1) EEPROM (2) DRAM [03]

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2. Draw the block diagram of microcontroller 8051. [04]
3. Why delay are required during programming and how they are generated? [07]

Q.2

1. Define bits of SCON & TCON registers. [03]
2. Define the terms: address bus, data bus and control bus. [04]

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3. Explain SFR (Special Function Register) and PSW (Program Status Word). [07]

Q.3

1. State important criterion for the selection of microcontroller. [03]
2. Explain Instructions: LIMP, XCHD, CJNE, and NOP. [04]
3. Write a program to generate an output as a square wave with a frequency of 50 Hz at P2.2 pin of 8051. Assume that the crystal frequency is 12MHz. [07]

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Q.4

1. Explain TMOD register. [03]
2. Define instruction cycle, machine cycle & T-state. [04]
3. Write a program to Toggle all the LEDs ON and OFF (Blinking LEDs) with a frequency of 01 Hz that are connected to PORT 01 of the 8051 Microcontroller. Take crystal frequency of 12 Mhz. [07]

Q.5

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1. What is the function of interrupts in 8051? List various interrupts available in 8051. [03]
2. Explain any two logical instructions of 8051 microcontroller. [04]
3. Explain different addressing modes of 8051 with example. [07]

Q.6

1. What do you mean by stack? Explain in brief w.r.t 8051. [03]

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2. Write a brief note on DAC. [04]
3. Explain interfacing of 7-segment display with 8051 microcontroller. [07]

Q.7

1. Explain the Interfacing of LED with 8051. [03]
2. State the similarities and differences between following instructions. ADD A, @R1 and ADD A, R1 [04]

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3. State various types of Jump and Loop instructions. Explain any three with examples. [07]

Q.8

1. What is a subroutine in 8051? Explain in brief with a suitable short example. [03]
2. Compare vectored & non-vectored interrupts for 8051 microcontroller. [04]
3. Draw internal architecture of 8051 microcontroller. Discuss function of each block in detail. [07]

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Total Marks: 56

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