8085 microprocessor architecture and pin diagram pdf

Unit i syllabus introduction to 8085 basic concepts of. The most significant 8 bits of the memory address or the 8 bits of the i0 address,3 stated during hold and halt modes. The microprocessor is the heart of any normal computer, whether it is a desktop machine, a server or a laptop. It is the number of bits processed in a single instruction. In this article you will get to know about the definition, architecture, block diagram and working of 8085 microprocessor. Learn about the interrupts,maskable and nonmaskable interrupts. Broadly 8085 architecture consists of three units viz. Refer functions of all the 8085 pins below in the table. These signals are used to identify the nature of operation. Appreciate the detailed explanation of address and data bus. Pin diagram of 8085 microprocessor computer science. Microprocessor 8085 pin configuration electricalvoice.

It indicates whether the hold signal is received or not. It will help them understand the basic concepts related to. When the signal on this pin is low for at least 3 clocking cycles, it forces the microprocessor to reset itself. The serial data on this pin is loaded into the seventh bit of the accumulator when rim instruction is executed. Pdf chapter 4 8085 microprocessor architecture and memory. Mar 16, 2020 in this article, we will discuss 8085 microprocessor pin configuration or pin diagram of 8085 or external architecture of 8085 microprocessor. Block diagram of 8085 microprocessor in hindi architecture. Demultiplexing address and data bus using ale address latch enable. Draw and explain the architecture of 8085 microprocessormay06. It provides serial interfacing with serial input data sid and serial output.

Also learn about the various signals used in 8085 microprocessor including instructions such as rim, sim, sid, sod, iom. Here you will be able to read the content of this class notes in 8086 microprocessor architecture as an embedded pdf. To study the pin diagram we group the signals into 5 categories. Architecture of risc risc microprocessor architecture uses highlyoptimized set of instructions. Goankar, microprocessor architecture, programming and applications with 8085, 5th edition, prentice hall week 1 basic concept and ideas about microprocessor. Microprocessor 8085 pin configuration tutorialspoint. Introduction, features and pin diagram introduction to 8085 microprocessor. Week 2 architecture of 8085 week 3 addressing modes and instruction set of 8085 week 4 interrupts of. Pin diagram of 8085 microprocessor with description. Actually it is known as update of the microprocessor. What is risc and cisc architecture with advantages know all about scada systems architecture and types basic fpga architecture and its applications. To find the largest number in an array of data using 8085 instruction set. Learn about the pin diagram, description of 8085 microprocessor. A15a8, it carries the most significant 8bits of memoryio address.

Microprocessor is a brain of every complex electronic gadget that is it is processing device of every computing device. Apr 15, 2018 pin diagram of 8085 video lecture of 8085 microprocessors chapter from microprocessor subject for electronics engineering students. The microprocessor 8086 is a 16bit cpu available in different. All these hardware modules as part of 8085 architecture have been shown in the figure with its respective pins used in 8085 chip.

The pins of a 8085 microprocessor can be classified into seven. Characteristics of risc the major characteristics of a risc processor are as follows. It is an 8bit microprocessor which was introduced by intel in the year 1976 using nmos technology. Refer to the reference manual for pin outs and details. Intel 8085 is an 8bit, nmos microprocessor designed by intel in 1977. In this article, we will discuss 8085 microprocessor pin configuration or pin diagram of 8085 or external architecture of 8085 microprocessor. The address and data bus are multiplexed in this processor which helps in providing more control signals. Figure 1 shows the pin diagram of the 8085 microprocessor. Overview of 8085 microprocessor 8085 architecture pin diagram functional block diagram. Draw the architecture of 8085 and mention its various functional blocks. They are used for the most significant bit of memory address. Program memory program can be located anywhere in memory. V cc hold hlda clkout reset in ready iom s 1 rd ale s 0 a 15 a 14 a a 12 a 11 a 10 a 9 a 8 wr x 1 x 2 reset out sod sid trap rst 7.

Interfacing the 8085 interfacing the 8085 a brief description of the signals between the 8085 and the outside world follows. Bus structure of 8085 microprocessor this application consists the basic example of 8085 microprocessor. Memory organisation in computer architecture array multiplier in digital logic difference between. Program, data and stack memories occupy the same memory space. The pin configuration and functional pin diagram of. Normally, this microcontroller was developed using nmos technology, which requires more power to operate. Intel 8085 8bit microprocessor intel 8085 is an 8bit, nmos microprocessor. Jul 30, 2019 the 8051 microcontroller is one of the basic type of microcontroller, designed by intel in 1980s. Lecture note on microprocessor and microcontroller theory and. With neat pin diagram explain the various signals of 8085. It is the set of instructions that the microprocessor can understand. A microprocessor is a controlling unit of a microcomputer, fabricated on a small chip capable of performing arithmetic logical unit alu operations and communicating with the other devices connected to it. What are the differences between microprocessor and flip flops, its basics and various types with block diagrams. The computer you are using to read this page uses a microprocessor to do its work.

This microcontroller was based on harvard architecture and developed primarily for use in embedded systems technology. This article discusses what is a 8085 microprocessor, pin configuration of 8085, which includes address bus, interrupts, rd, wr, ready, hold, hlda, intr. It determines the number of operations per second the processor can perform. Audience this tutorial is designed for all those readers pursing either bachelors or masters degree in computer science. Pin diagram 8085 microprocessor microprocessor youtube. In this tutorial, we will discuss the architecture, pin diagram. Pdf 8085 microprocessor architecture and instruction set. It, also known as central processing unit cpu is like an artificial brain. Unit1 introduction to 8086 ece department microprocessors and microcontrollers page 1 uniti introduction to 8086 contents at a glance. Cpu central processing unit alu arithmeticlogic unit control logic registers, etc memory input output interfaces processor system architecture interconnections between these units. Draw the pin configuration and functional pin diagram of p 8085. Before knowing about the 8085 architecture in detail, lets us briefly discuss about the basic features of 8085 processor 8085 microprocessor is an 8bit microprocessor with a 40 pin dual in line package. It is a 40 pin c package fabricated on a single lsi chip. Jul 26, 2019 block diagram of 8085 microprocessor in hindi architecture.

Draw the pin configuration and functional pin diagram of. In this tutorial, we will discuss the architecture, pin diagram and other key concepts of microprocessors. Jun 22, 2019 introduction in the previous articles we saw about the architecture of microprocessor. Interrupt the 8085 addresses the same amount of memory, executed about the same.

Microprocessor 8085 architecture in microprocessor tutorial. It is an appended version of the 8080 microprocessor. Tutorial on introduction to 8085 architecture and programming. The signals from the pins can be grouped as follows. The microprocessor you are using might be a pentium, a k6, a powerpc, a sparc or any of the many other brands and types of microprocessors, but they all do approximately the same thing in approximately. Ad7ad0, it carries the least significant 8bit address and data bus. Ad0 ad7 inputoutput 3state multiplexed addressdata bus. This video is highly rated by computer science engineering cse students and has been viewed 416 times. The 8086 architecture has 6byte instruction prefetch queue. It is used in portable devices like apple ipod due to its power efficiency. The time for the back cycle of the intel 8085 a2 is 200 ns.

Microprocessor 8085 architecture in microprocessor. The pins of a 8085 microprocessor can be classified into seven groups. This processor can be built with electronic logic circuits that are fabricated using the technologies like vlsi very large scale integration or lsi large scale integration. The 8085 is an 8bit general purpose microprocessor that can address 64k byte of memory. Microprocessors and microcontrollers architecture programming. Its data bus width is 8bit and address bus width is 16bit, thus it can address 216 64 kb of memory. Jan 17, 2018 apr 28, 2020 pin diagram of 8085 microprocessor computer science engineering cse video edurev is made by best teachers of computer science engineering cse.

Here, we will describe intel 8085 as it is one of the most popular 8bit microprocessor. Here, cpu acts as the core of the microprocessor and it has instruction register and decoder, timing control, various registers, and serial io control. Pin diagram of 8085 microprocessor is as given below. The following image depicts the pin diagram of 8085 microprocessor. The microprocessor is the cpu central processing unit of a computer. The intel 8085 microprocessor is a second generation microprocessor and is an eightbit processor designed in the year of 1976 with the nmos technology with a 40 pin dip, approximately consisting 6500 transistors having a power supply of 5v. In this tutorial, we will discuss the architecture, pin diagram and other key concepts of. Apr 28, 2020 pin diagram of 8085 microprocessor computer science engineering cse video edurev is made by best teachers of computer science engineering cse. The following image depicts the pin diagram of 8085 microprocessor 8085 pin configuration. Hardware architecture of intel 8086 pin diagram and pin details minmax mode hardware organization of address space control signals coprocessor and multiprocessor configuration io interfaces prof. The 20 lines of the address bus operate in multiplexed mode. Pin diagram of 8086 microprocessor is as given below. This webpage contains various slides of microprocessors. Pin diagram and pin description of 8085 microprocessor.