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03000EE309092002

Pages: 2

Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
Fifth semester B.Tech degree examinations (S) September 2020

Course Code: EE309
Course Name: MICROPROCESSOR AND EMBEDDED SYSTEMS

PARTA
Answer all questions, each carries 5 marks.

Differentiate between 1 byte, 2 byte and 3-byte instructions of 8085 with
suitable examples
Sketch the timing diagram of STA 4500
Explain the Mode 1 operation of 8255
Compare microprocessor and microcontroller
List any five bit manipulation instructions of 8051
Explain different addressing modes of 8051
Explain the TMOD register of 8051
Write an ALP in 8051 to divide two numbers and store the result in memory
locations 4500 and 4501.

PART ‏تا‎

Answer any two full questions, each carries 10 marks.

Write an ALP in 8085 to sort an array of numbers in ascending order.
Explain in detail the stack related operations in 8085
Explain the instruction (i) LDAX Rp (ii) RAL
Find the count to be loaded in a register pair to obtain a delay of 2500 us.
Assume clock frequency as 3 MHz
Draw the internal architecture of 8085
Explain the various machine cycles of 8085

PART C

Answer any two full questions, each carries 10 marks.

Illustrate the application of SIM instruction in 8085 microprocessor

List the challenges and current trends in embedded system design

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Duration: 3 Hours

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