Register Number
SATHYABAMA UNIVERSITY
(Established under section 3 of UGC Act,1956)
Course & Branch :B.E - P-MECH
Max. Marks:80
Title of the Paper :Microprocessor and Microcontroller
Sub. Code :SECX1011(2010-11)
Time : 3 Hours
Date :04/05/2012
Session :FN
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1.
PART - A
(10 x 2 = 20)
Answer ALL the Questions
What is the function of DAD instruction?
2.
What are tri-state devices?
3.
Write an assembly language program for software delay using a
register pair available in 8085?
4.
What is the significance of READY signal?
5.
What is the use of RTD sensor?
6.
What is anti lock breaking?
7.
Define SBUF in 8051. What is its use?
8.
What is the alternate function of Port 3 in 8051 microcontroller?
9.
What is PWM?
10. Write a program to generate a square wave in 8051.
PART – B
Answer All the Questions
(5 x 12 = 60)
11. Draw the architectural diagram of 8085 and give the function of
each pin.
(or)
12. Explain in detail the classification of instruction set of 8085.
13. (a)Write an assembly language program to sort an array in
ascending order.
(b) Draw the timing diagram of the instruction MVI A, FF
(or)
14. Describe the architecture and working of 8253 timer.
15. Explain how 8085 microprocessor can be used for traffic light
control application.
(or)
16. Explain the interfacing of CNC machines with a neat block
diagram.
17. (a) Explain in detail the special function registers of 8051.
(b) Explain briefly the addressing modes of 8051.
(or)
18. (a) Discuss about I/O ports.
(b) Explain the various serial communication modes of operation
of 8051 microcontroller.
19. Explain how to interface a stepper motor with 8051
microcontroller.
(or)
20. Explain the interfacing of LCD with 8051 microcontroller.