Explain block diagram of 8085 microprocessor architecture pdf

A word refers to the basic data size or bit size that can be processed by the. It is an 8bit register used to perform arithmetic, logical, i. Pin diagram of 8085 microprocessor is as given below. Architechture of 8085 free 8085 microprocessor lecture. In this article, we are going to discuss the architecture of the 8086 microprocessor. Draw and explain block diagram of microprocessor based system. Normally, this microcontroller was developed using nmos technology, which requires more power to operate. To perform a specific job or task, the microprocessor has to execute a program stored in memory. The schematic representation of the 8085 bus structure is as shown in fig. What is meant by the statement that 8085 is a 8bit microprocessor. This is the function al block diagram of 8085 microprocessor. Draw the architecture of 8085 and mention its various functional blocks.

It is an 8bit microprocessor which was introduced by intel in the year 1976 using nmos technology. It contains well written, well thought and well explained computer science and programming articles, quizzes and. In this tutorial, we will discuss the architecture, pin diagram and other key concepts of. The address and data bus are multiplexed in this processor which helps in providing more control signals. Microprocessors darshan institute of engineering and technology. Based on their specification, application and architecture microprocessors are. The term 16 bit implies that its arithmetic logic unit, its internal registers, and most of its instructions are intended to. Buy microprocessor 8085 architecture, programming and interfacing by ajay wadhwa pdf online. A typical microprocessor architecture is shown in figure 1. The reason for the reversal is that it makes the 8088 compatible with the 8085. The functional block diagram or architechture of 8085 microprocessor is very important as it gives the complete details about a microprocessor. Microprocessor 8085 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. Block diagram of 8259 pic microprocessor the block diagram consists of 8 blocks which are data bus buffer, readwrite logic, cascade buffer comparator, control logic, priority. The architecture of 8086 microprocessor, is very much different from that of 8085 microprocessor.

A microprocessorbased system from the above description, we can draw the following block diagram to represent a microprocessorbased system. The version 8085 a2 operates at a maximum frequency of 5 mhz. Microprocessor 8085 architecture in microprocessor. Architecture and functional block diagram of 8085 microprocessor microprocessor 8085 architecture 8085 architecture 8085 microprocessor the functional block diagram or architecture of 8085. Lecture note on microprocessor and microcontroller theory. Figure shows a schematic that uses a latch and the ale signal to demultiplex the bus. Functional block diagram of 8086 microprocessor the 8086 is a 16bit microprocessor.

See all formats and editions hide other formats and. To know the working of 8085 microprocessor, we should know the timing diagram of 8085 microprocessor. Microprocessor 8085 architecture, programming and interfacing. In this article you will get to know about the definition, architecture, block diagram and working of 8085. There are 5 interrupt signals in 8085 microprocessor. After the request is completed, the control goes back to the main program. The six generalpurpose registers are used to store 8bit data. The main operation of alu is arithmetic as well as logical which includes addition, increment, subtraction, decrement, logical operations like and, or, exor, complement, evaluation, left shift or right shift. This microcontroller was based on harvard architecture and developed primarily for use in. With neat pin diagram explain the various signals of 8085. With help of timing diagram we can easily calculate the execution time of instruction. This microcontroller was based on harvard architecture and developed primarily for use in embedded systems technology.

It is a 8bit register which is used to perform airthmetical and logical operation. When 8251 block diagram in microprocessor is in the asynchronous mode an4 it is ready to accept a character, it looks for a low level on the rxd line. We will first see a block diagram explaining the layout of the components of the microprocessor and will then explain the. Pin diagram of 8085 microprocessor with description. Microprocessor architecture the microprocessor can be programmed to perform functions on given data by writing specific instructions into its memory.

Pin diagram of 8085 microprocessor with description 8085 is a general purpose microprocessor having 40 pins and works on single power supply. The 8051 microcontroller is one of the basic type of microcontroller, designed by intel in 1980s. The 8085 architecture consists of control unit,alu,registers,accumulator,flags,program counter,stack. This article discusses an overview of what is 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. When a microprocessor is executing a main program and whenever an interrupt occurs, the microprocessor shifts the control from the main program to process the incoming request. The 8088 microprocessor can access data in any one out of 4 available segments, which limits the size of accessible memory to. The microprocessor contains millions of tiny components like transistors, registers, and diodes that work together. In this article you will get to know about the definition, architecture, block diagram and working of 8085 microprocessor.

This is the functional block diagram of the 8085 microprocessor. Block diagram internal architecture and description i bus organization. We have already discussed the introduction to the microprocessor and 8085 microprocessor. The microprocessor is the master, which controls all the activities of the system.

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. Microprocessor architecture, programming, and applications. Draw the pin configuration and functional pin diagram of. The internal architecture of 8085 includes the alu, timing and control unit, instruction register and decoder, register array, interrupt control and serial io control. This 8085 architecture describes 8085 microprocessor internal modules with block diagram. Tutorial on introduction to 8085 architecture and programming. The applications of 8085 microprocessor include microwave ovens, washing machines, gadgets, etc. Both the temporary registers as well as accumulators are utilized for holding the information throughout in the operations then the. Learning objectives on completion of this lesson you will be able to. Microprocessor architecture, programming, and applications with the 8085 paperback july 6, 20 by gaonkar author 4. Lecture note on microprocessor and microcontroller theory vssut. A microprocessor consists of an alu, control unit and.