MU Microcontrollers and Applications - December 2011 Exam Question Paper

MU Electronics and Telecom Engineering (Semester 5)
Microcontrollers and Applications
December 2011

Total marks: --
Total time: --

INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

1 (a) Explain I/O mapped I/O and memory mapped I/O

5 M

1 (b) Explain T-state, Machine cycle and Instruction cycles

5 M

1 (c) Explain internal memory organization of 8051

5 M

1 (d) Describe addressing modes of ARM processor

5 M

2 (a) Explain serial communication in 8055 system

10 M

2 (b) Draw the timing diagram XTHL instruction

10 M

3 (a) Explain interrupt structure of 8085 microprocessor

10 M

3 (b) Write an Assembly Language program to generate square wave of 1 kHz using 8255

10 M

4 (a) Draw and explain internal memory organization of 8051

10 M

4 (b) Draw and explain the formats of interrupt enable SFR and interrupt priority SFR of 8051

10 M

5 (a) Explain the following instruction of ARM processor :
MLA
QADD Rd, Rm, Rn
SMULL
LSL
CMP R0, R1

10 M

5 (b) Draw and explain the architecture of ARM processor

10 M

6 (a) Write a program to arrange given set of numbers in ascending order

10 M

6 (b) Explain 8253 control register format and generate control word to set counter-0 in mode 3 with BCD counting and loading only LSB count

10 M

7 (a) Compare power down and idle mode of 8051

5 M

7 (b) Compare features of 89C51, 89C52, 89C2051, 89C2052

5 M

7 (c) Explain modes of 8259

5 M

7 (d) Write an Assembly Language program to turn on and off LED connected to PC5 of port C of 8255 using BDR mode

5 M

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