Microcontrollers and Applications - Dec 2011

Electronics & Telecomm. (Semester 5)

TOTAL MARKS: 80
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Assume data if required.
(4) Figures to the right indicate full marks. 1 (a) Explain I/O mapped I/O and memory mapped I/O(5 marks) 1 (b) Explain T-state, Machine cycle and Instruction cycles(5 marks) 1 (c) Explain internal memory organization of 8051(5 marks) 1 (d) Describe addressing modes of ARM processor(5 marks) 2 (a) Explain serial communication in 8055 system(10 marks) 2 (b) Draw the timing diagram XTHL instruction(10 marks) 3 (a) Explain interrupt structure of 8085 microprocessor (10 marks) 3 (b) Write an Assembly Language program to generate square wave of 1 kHz using 8255(10 marks) 4 (a) Draw and explain internal memory organization of 8051(10 marks) 4 (b) Draw and explain the formats of interrupt enable SFR and interrupt priority SFR of 8051(10 marks) 5 (a) Explain the following instruction of ARM processor :
MLA
QADD Rd, Rm, Rn
SMULL
LSL
CMP R0, R1(10 marks) 5 (b) Draw and explain the architecture of ARM processor (10 marks) 6 (a) Write a program to arrange given set of numbers in ascending order (10 marks) 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 marks) 7 (a) Compare power down and idle mode of 8051(5 marks) 7 (b) Compare features of 89C51, 89C52, 89C2051, 89C2052(5 marks) 7 (c) Explain modes of 8259(5 marks) 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 marks)