Block diagram of 8085 and 8086 microprocessor pdf

Central processing unit cpu is carved on a single chip is called a microprocessor. There would be two pin diagrams one for min mode and the other for max mode of 8086, shown in figs. Lecture note on microprocessor and microcontroller theory vssut. The address and data bus are multiplexed in this processor which helps in providing more control signals. Pdf on aug 8, 2012, shree krishna khadka and others published a notebook on microprocessor. What is the block diagram of microprocessor answers. Fetching decoding execution but in the case of 8086, if you see the block diagram of the architecture, you will find that the whole architecture is divided into two major parts. The term 16bit means that its arithmetic logic unit, internal registers, and most of its instructions are designed to work 16bit binary words. Lecture note on microprocessor and microcontroller theory.

It has a 16bit data bus, so it can read data from or write data to memory and ports either 16bit or 8bit at. This 8085 architecture describes 8085 microprocessor internal modules with block diagram. Youtube sh4 risc processor microprocessor and microcontroller. Words will be stored in two consecutive memory locations. Block diagram block diagram of intel 8086 microprocessor. It is brief about 8086 microprocessor which is improved version of 8085. The microprocessor fetches those instructions from the memory, then decodes it and executes those. Intel 8086 microprocessor architecture, features, and signals. Block diagram of 8085 microprocessor in hindi architecture. Pdf multiple choice questions on 8086 microprocessor. In this tutorial, we will discuss the architecture, pin diagram and other key concepts of microprocessors. In this article you will get to know about the definition, architecture, block diagram and working of 8085 microprocessor.

To perform a specific job or task, the microprocessor has to execute a program stored in memory. The 8085 architecture consists of control unit,alu,registers,accumulator,flags,program counter,stack pointer,instruction register,memory address register,control register etc. We will first see a block diagram explaining the layout of the components of the microprocessor and will then explain the diagram briefly describing each of its components. Draw and explain block diagram of microprocessor based system. It means that its alu, internal register and most of the instructions are designed so that these can work on the 16 bit memory word. The functional components of a cpu are arithmetic logic unit alu, control and timing units, registers are found in a single integrated circuit called ic. The reason for the difference is that some actually most instructions have multiple different formats. The 8085 microprocessor consisted of 6500 mos transistors and could work at clock frequencies of 35. Functional pin diagram 12 understanding 80858086 microprocessors and peripheral ics through questions and answers 2. The 8085 uses a total of 246 bit patterns to form its instruction set. The microprocessor contains millions of tiny components like transistors, registers, and diodes that work together. So, we need to interface the keyboard and other devices with the microprocessor by using latches and buffers.

Let us take a look at the changes between 8085 series of microprocessors and 8086 series of microprocessors. Initially, the instructions are stored in the memory in a sequential order. Asked in microprocessors, intel 8085, artificial intelligence block diagram of 8085 microprocessor for polytechnic. Memory address generation the biu has a dedicated adder for determining. The 8085 machine language the 8085 from intel is an 8bit microprocessor. Differences between 8085 and 8086 microprocessor in the changing world of technologies, the devices used are also changing. It controls and executes the flow of data between the microprocessor, memory. Microprocessor io interfacing overview tutorialspoint.

Its data bus width is 8bit and address bus width is 16bit, thus it can address 216 64 kb of memory. Finally, the microprocessor performs a particular task according to the instruction. The six generalpurpose registers are used to store 8bit data. There are various communication devices like the keyboard, mouse, printer, etc. Draw the pin configuration and functional pin diagram of. This type of interfacing is known as io interfacing. Pdf chapter 4 8085 microprocessor architecture and memory. Where the hmos is used for highspeed metal oxide semiconductor. It issues address and control signals and fetches the instruction and data from memory.

It is an intel microprocessor and also a 16 bit microprocessor. The pins that differ with each other in the two modes are from pin24 to pin31 total 8 pins. The intel 8086 is a 16bit microprocessor intended to be used as the cpu in a microcomputer. Where alu performs arithmetic and logical operations on the data received from an input device or memory.

Unlike, 8085, an 8086 microprocessor has 20bit address bus. The 8086 microprocessor is a16bit, nchannel, hmos microprocessor. Intel 8085 8bit microprocessor intel 8085 is an 8bit, nmos microprocessor. A microprocessor consists of an alu, control unit and register array. Pdf understanding 80858086 microprocessors and peripheral. Microprocessors darshan institute of engineering and technology. The microprocessor is the master, which controls all the activities of the system. The main characteristics of 8086 microprocessor are as follows. Microprocessors and microcontrollers 8085, 8086 and 8051. This microprocessor had major improvement over the execution speed of 8085. Intel 8086 is built on a single semiconductor chip and packaged in a 40pin ic package. Easiest way to memorise 8085 microprocessor architecture. Pin diagram of 8085 microprocessor is as given below. 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.

In this article, we are going to discuss the architecture of the 8086 microprocessor. It is a 40 pin c package fabricated on a single lsi chip. Intel 8086 microprocessor is the enhanced version of intel 8085 microprocessor. Pdf a notebook on microprocessor system researchgate. Architecture and functional block diagram of 8085 microprocessor microprocessor 8085 architecture 8085 architecture 8085 microprocessor the functional block diagram or architecture of 8085 microprocessor is very important as it gives the complete details about a microprocessor. Differences between 8085 and 8086 microprocessor difference between 8080 and 8085 microprocessor. As discussed earlier, the 8086 microprocessor consists of two main blocks. And an 8086 microprocessor is able to perform these operations with 16bit data in one cycle.