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MU Electronics and Telecom Engineering (Semester 5)
Microcontrollers and Applications
May 2013
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

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1 (a) Explain difference between microprocessor and microcontroller
5 M
1 (b) Interface 32KB SRAM using 8k X 8 devices and 64KB EPROM using 16k X 8 devices for 8085 based microprocessor system.
15 M

2 (a) Draw and explain architecture of 8085 microprocessor
10 M
2 (b) Write a program for 8085 microprocessor to exchange memory block
10 M

3 (a) Draw and explain interrupt acknowledge machine cycle for 8085 microprocessor
10 M
3 (b) Explain Bit level instruction for 8051 microcontroller
10 M

4 (a) Explain ICW and OCW of 8259 PIC
10 M
4 (b) Explain serial data transfer modes for 8051 microcontroller
10 M

5 (a) Explain internal memory organization of 8051 microcontroller
10 M
5 (b) Write assembly level program for 8051 microcontroller to generate 1 KHz square wave on P1.1. Assume crystal frequency is 12 MHz
10 M

6 (a) Draw and explain interrupt structure of 8085 microprocessor
10 M
6 (b) Explain follwing instruction of ARM :
(i) ADD R0, R1, R2
(ii) SBC R0, R1, R2
(iii) CMP R0, R1
(iv) MUL R3, R2, R1
(v) MLA R4, R3, R7, R8
10 M

7 (a) Explain control word of 8253 Timer.
5 M
7 (b) Compare features of 89C51, 89C53, 89C2051, 89C2052
10 M
7 (c) Draw and explain interfacing of stepper with 8051 micronoctroller
5 M


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