Microcontrollers and Applications - May 2013

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 difference between microprocessor and microcontroller(5 marks) 1 (b) Interface 32KB SRAM using 8k X 8 devices and 64KB EPROM using 16k X 8 devices for 8085 based microprocessor system.(15 marks) 2 (a) Draw and explain architecture of 8085 microprocessor (10 marks) 2 (b) Write a program for 8085 microprocessor to exchange memory block(10 marks) 3 (a) Draw and explain interrupt acknowledge machine cycle for 8085 microprocessor(10 marks) 3 (b) Explain Bit level instruction for 8051 microcontroller(10 marks) 4 (a) Explain ICW and OCW of 8259 PIC(10 marks) 4 (b) Explain serial data transfer modes for 8051 microcontroller (10 marks) 5 (a) Explain internal memory organization of 8051 microcontroller(10 marks) 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 marks) 6 (a) Draw and explain interrupt structure of 8085 microprocessor(10 marks) 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 marks) 7 (a) Explain control word of 8253 Timer.(5 marks) 7 (b) Compare features of 89C51, 89C53, 89C2051, 89C2052(10 marks) 7 (c) Draw and explain interfacing of stepper with 8051 micronoctroller(5 marks)