Chhattisgarh Swami Vivekanand Technical University, Bhilai
Semester : V Branch:AEI/CS/EI/EEE/ET&T/IT
Subject: Microprocessor & Interfaces
UNIT – I
ntroduction to Microprocessors, Architecture of 8085, Pin Configuration and
Function; internal register & flag register, Generation of Control Signals: Bus Timings: Demultiplexing of address /
data bus; Fetch Cycle, Execute Cycle, Instruction Cycle, Instruction Timings and Operation Status, Timing
UNIT – II
Instruction Set and Programming with 8085:
Instruction for Data Transfer. Arithmetic and Logical Operations.
Branching Operation: Machine Cycle Concept; Addressing Modes; In structions Format: Stacks. Subroutine and
Related Instructions. Elementary Concepts of Assemblers, Assembler Directives, Looping and Counting: Software
Counters with Time Delays: Simple Programs using Instruction Set of 8085: Debugging: Programs Involving
Subroutines. Programs for Code Conversion e.g. BCD to Binary, Binary to BCD. Binary to Seven-Segment LED
Display. Binary to ASCII. ASCII to Binary: Program for Addition Subtraction: Programs for Multiplication and
Division of Unsigned Binary Numbers.
UNIT – III
Data Transfer and Device Selection:
Format of Data Transfer: Modes of Data Transfer: Type of I/O Addressing:
Condition of Data Transfer: Microprocessor Controlled Data Transfer: Peripheral Controlled Data Transfer:
Absolute and Linear Select Decoding: Memory and I/O Interfacing: Use of Decoders Selection: Memory
organization and Mapping.
UNIT – IV
Restart Instruction; Hardware Implementation: Interrupt Processing; Multiple Interrupts and Priority
Concepts: Interrupt Structure of 8085: Instructions related to interrupts: Pending Interrupts: Use of Interrupt and
Handshaking Signals in Interfacing: Application of Interrupts and Illustrative Programs.
UNIT – V
Architecture of Peripheral Interfacing Devices:
Architecture, Pin Diagram and functioning of 8155/8156 (RAM),
8355/8755 (ROM), 8255 (PPI). Simple programs like Initialization and I/O operations of the ports, Timer operation
Programmable Internal Timer 8253/8254: Block Diagram, Pin Configuration, Modes, Initialization Ins truction,
Interfacing and Simple Programmes to generate various types of signals.
Architecture, Pin diagram, description and initialization of Keyboard and display interface (8279), USART (8251)
Name of Text Books:
1. Microprocessor Architecture, Programming and Application by R. S. Gaonkar, Wiley Eastern
2. Digital Systems – From Gates to Microprocessors by Sanjay K. Bose, New Age International Publishers.
Name of Reference Books:
1. 8085 Microprocessor Programming & Interfacing – N.K. Srinath, PHI
2. Digital Computer Electronics – Malvino, TMH
3. Microprocessors: Theory and Applications – Intel and Motorolla, Rafiquuzzaman, PHI.
4. 0000 to 8085: Introduction to Microprocessor for Engineers and Scientists, Ghosh & Sridhar, PHI