Instruction set of 8085 an instruction is a binary pattern designed inside a microprocessor to perform a specific function. The entire group of instructions that a microprocessor supports is called instruction set. Lecture note on microprocessor and microcontroller theory vssut. Floppy disks are commonly used to move files between different. The microprocessor fetches those instructions from the memory, then decodes it and executes those instructions till stop instruction is reached. These general purpose registers are used to hold data like any other registers. The time for the back cycle of the intel 8085 a2 is 200 ns. The basic units or blocks of a microprocessor are alu, an array of registers and control unit. The following are the functional blocks in the 8085 microprocessor. The most commonly used assembler directives are org, db, dw, equ, and end. Draw the pin configuration and functional pin diagram of.
The six generalpurpose registers are used to store 8bit data. It is a 40 pin c package fabricated on a single lsi chip. Each instruction is represented by an 8bit binary value. In addition to the above mentioned registers intel 8085 microprocessor also contains address buffer and dataaddress. Architecture of 8085 microprocessor with block diagram unlike other registers, this temporary register can only be accessed by the microprocessor and it is completely inaccessible to programmers. Intel 8085 8bit microprocessor shrimati indira gandhi. The internal architecture functional block diagram of 8085 microprocessor is shown in figure. This document does not claim any originality and cannot be used as a substitute for. Pdf an introduction to microprocessor 8085 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. With neat pin diagram explain the various signals of 8085 microprocessormay04. Intel 8085 8bit microprocessor intel 8085 is an 8bit, nmos microprocessor. The architecture of microprocessor 8085 can be divided into seven parts as follows. The function of the program counter is to point to the memory address of the next instruction to be executed. It controls and executes the flow of data between the microprocessor, memory and peripherals. Pin diagram of 8085 microprocessor is as given below. 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. Initially, the instructions are stored in the memory in a sequential order. How to invest like warren buffett moneyweek investment tutorials duration. Tutorial on introduction to 8085 architecture and programming.
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