Ad7ad0, it carries the least significant 8bit address and data bus. Microprocessors and interfacing 8086, 8051, 8096, and. Draw the pin configuration and functional pin diagram of p 8085. Buy microprocessor 8085 architecture, programming and interfacing by ajay wadhwa pdf online. The intel 8085 eightyeightyfive is an 8bit microprocessor introduced by intel in 1977. The microprocessor is one of most known subject is computer engineering branch. Both the temporary registers as well as accumulators are utilized for holding the information throughout in the operations then the.
These signals are used to identify the nature of operation. This article discusses what is a 8085 microprocessor, pin configuration of 8085, which includes address bus, interrupts, rd, wr, ready, hold, hlda, intr. In this tutorial, we will discuss the architecture, pin diagram and other key. Its data bus width is 8bit and address bus width is 16bit, thus it can address 216 64 kb of memory. Tutorial on introduction to 8085 architecture and programming.
The pin configuration and functional pin diagram of. The 8085 microprocessor architecture 8085 instruction set data transfer operations between registers between memory location and a register direct write to a. Microprocessor mcq questions instrumentation tools. Apr 28, 2020 pin diagram of 8085 microprocessor computer science engineering cse video edurev is made by best teachers of computer science engineering cse. Lecture note on microprocessor and microcontroller theory vssut.
The 8086 architecture has 6byte instruction prefetch queue. Pin description of 8085 contd page2 the microprocessor is a clockdriven semiconductor device consisting of electronic logic circuits manufactured by using either a largescale integration lsi or verylargescale integration vlsi technique. Pin diagram and pin description of 8085 microprocessor. The functional block diagram or architecture of 8085 microprocessor gives the complete details about a. Pin diagram of 8085 microprocesoor free download as powerpoint presentation. Cpu central processing unit alu arithmeticlogic unit control logic registers, etc memory input output interfaces processor system architecture interconnections between these units.
With neat pin diagram explain the various signals of 8085. Based on their specification, application and architecture microprocessors are classified. This pin resets the program counter to 0 and resets interrupt enable and hlda flipflops. Pdf 8085 microprocessor architecture and instruction set. Pin diagram of 8085 microprocessor computer science. It has 16 address lines, therefore it can access 216 64k bytes of memory.
Processing unit consists of alu, accumulator, status flags and temporary register. For both high and low states, the output q draws a current from the input of the or gate. 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 is an active high, serial input port pin, used to accept serial 1 bit data under software control. It is the set of instructions that the microprocessor can understand.
To perform addition of two 8 bit numbers using 8085. Microprocessor 8085 architecture, programming and interfacing. Pin description of 8085contd page2 the microprocessor is a clockdriven semiconductor device consisting of electronic logic circuits manufactured by using either a largescale integration lsi or verylargescale integration vlsi technique. Draw the pin configuration and functional pin diagram of. They insert an internal restart function automatically. It determines the number of operations per second the processor can perform. 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. Microprocessor 8085 pin configuration tutorialspoint. The 8085 is an 8bit general purpose microprocessor that can address 64k byte of memory. Broadly 8085 architecture consists of three units viz. The 8085 machine language the 8085 from intel is an 8bit microprocessor. Microprocessor 8085 architecture in microprocessor. The address and data bus are multiplexed in this processor which helps in providing more control signals. The 8085 in cludes on its chip most of the logic circuitry for per forming computing tasks and for communicating with peripherals.
Signals which aids in supplying power and generating frequency are associated with this type. Ppt the 8085 microprocessor architecture powerpoint. It is a 40 pin c package fabricated on a single lsi chip. Draw and explain the architecture of 8085 microprocessormay06. The following image depicts the pin diagram of 8085 microprocessor. Microprocessors darshan institute of engineering and technology. A15a8, it carries the most significant 8bits of memoryio address. The pins of a 8085 microprocessor can be classified into seven groups. Interrupt the 8085 addresses the same amount of memory, executed about the same.
All these hardware modules as part of 8085 architecture have been shown in the figure with its respective pins used in 8085 chip. 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. This signal can be used as the system clock for other devices. 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. Refer functions of all the 8085 pins below in the table. It is an 8bit microprocessor which was introduced by intel in the year 1976 using nmos technology.
Pin diagram of 8085 microprocesoor central processing. A free powerpoint ppt presentation displayed as a flash slide show on id. This distinguishes whether the address is for memory or io. It is the number of bits processed in a single instruction. Intel 8085 8bit microprocessor intel 8085 is an 8bit, nmos microprocessor. Actually it is known as update of the microprocessor. Pin diagram of 8085 microprocessor is as given below. Microprocessor 8085 pin configuration the following image depicts the pin diagram of 8085 microprocessor. Pin diagram of 8085 and pin description of 8085 free 8085. The 8085 microprocessor architecture the 8085 and its busses the 8085 is an 8bit general purpose microprocessor that can address 64k byte of memory.