MU Electronics Engineering (Semester 5)
Microcontroller and Applications
December 2014
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 program status word of 8051 micro controller in detail.
5 M
1 (b) Describe the TCON, TMOD SFR?
5 M
1 (c) Explain the ARM7 pipeline mechanism.
5 M
1 (d) What are the statuses of Condition Flags in Logical & Arithmetic Instructions?
5 M

2 (a) What are the different addressing modes of 8051 micro controller? Explain each with suitable example.
10 M
2 (b) Explain various timer modes available in 8051 micro controller in detail.
10 M

3 (a) Describe the interrupt structure of 8051 in detail.
10 M
3 (b) Explain the following instructions of 8051 with examples.
i) CJNE destination source, label,
ii) MUL AB,
iii) INC @Rp
iv) SWAP A
v) SETB P2.0
10 M

4 (a) Explain ARM Processor modes.
10 M
4 (b) Explain various ARM processor exceptions & interrupt with its vector locations.
10 M

5 (a) Explain how the ARM instruction set suitable for embedded applications.
10 M
5 (b) Explain the following instructions of ARM processor
i) TSTEQ r2, #5;
ii) CMP r0, r1;
iii) BICEQ r2, r3, #7;
iv) MVNEQ r1, #0;
v) STR r0, [r1, #12].
10 M

6 (a) Create a square wave of 50% duty cycle over a pin P1.5 with 2 khz frequency (Assume Crystal frequency=12 Mhz).
10 M
6 (b) Write an 8051 assembly language program to find largest number among five 8-bit numbers?
10 M



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