The entire group of instructions that a microprocessor supports is called instruction set. Lecture note on microprocessor and microcontroller theory and. Draw the pin configuration and functional pin diagram of p 8085. Bring out the distinguishing features between memory mapped io scheme. It is a 40 pin dipdual in package ic by intel introduced in 1976. The intel 8085 a is a complete 8 bit parallel central processing unit. The time for the back cycle of the intel 8085 a2 is 200 ns. Its data bus width is 8bit and address bus width is 16bit, thus it can address 216 64 kb of memory. Comprehensive study of microprocessor by naresh grover 4. Architecture of intel 8085 microprocessor features of 8085 intel 8085 is an 8bit, nmos microprocessor. This article discusses 8085 microprocessor architecture which includes features, stack pointer, address bus, data bus, instruction set, and addressing modes.
As discussed earlier, 8085 microprocessor was introduced by intel in the year 1976. The ebook has complete chapters on microprocessor and it is usually included. It is an 8 bit microprocessor each character is represented by 8 bits or a byte. It is a device or rather say a integrated chip which process some instructions given to it in microseconds. The chapter wise class notes of microprocessors in pdf files listed below are compiled by er. The intel 8085 eightyeightyfive is an 8bit microprocessor produced by intel and introduced in march 1976. If the operand is a memory location, its location is specified by the contents of the hl registers. Implementation of traffic light control system using microprocessor 8085.
Opcodes table of intel 8085 opcodes of intel 8085 in. The main components of 8085a are array of registers, the arithmetic logic unit, the encoderdecoder, and timing and control circuits linked by an internal data bus. The 8085 and address ranges now, we can break up the 16bit address of the 8085 into two pieces. This was the beginning of medical surgical nursing 10th ed brunner suddarth pdf a new era in computer applications. Features of 8085 8085 microprocessor course z series innovations. Microprocessor architecture, programming and applications with the 8085 this book provides a comprehensive treatment of the microprocessor, covering both hardware and software based on the 8085 microprocessor family. To perform the multiplication of two 8 bit numbers using 8085.
Introduction to microprocessor by adithya p mathur, tata mcgraw hill publishers, new delhi 5. In addition to these features, the 8085a has three maskable, restart interrupts and one. Tutorial on introduction to 8085 architecture and programming. An assembler is a software tool a program designed to simplify the task of writing computer programs. Kaushik and others published an introduction to microprocessor 8085 find, read and cite all the research you need on researchgate. Thus, a thorough understanding of 8085 microprocessor is central and is a gateway. Tybsc electronic instrumentation ii mumbai university. However, it requires less support circuitry, allowing simpler and less expensive microcomputer systems to be built. The 8085 was to be the last 8bit, generalpurpose microprocessor. The architecture of a microprocessor is to be learnt in terms of registers, memory. Lecture note on microprocessor and microcontroller theory vssut. The intel microprocessors 80868088, 8018680188, 80286. 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.
Object oriented system analysis and design chapter 5. This book was first published in 1984 and it has been in the field for nearly three decades. It determines the number of operations per second the processor can perform. Hello friends,lots of reader would like to read the content for microprocessor short question and answer in the offline mode as well,here is the pdf file which contains lots of microprocessor short question and answer pdf for offline study you can download pdf file. It operates on 8bit data and uses 16bit address to access the memory. Lecture note on microprocessor and microcontroller theory. This microprocessor is an update of 8080 microprocessor. It is the number of bits processed in a single instruction. The ebook has complete chapters on microprocessor and it is. The reason for the difference is that some actually most instructions have multiple different formats. The 8080 processor was updated with enabledisable instruction pins and interrupt pins to form the 8085 microprocessor.
Mvi b, 3eh move the data 3eh given in the instruction to b register. Pin configuration of the microprocessor 8085 is shown in figure. This was introduced by the intel company in the year 1977 to 1990. It is an 8 bit general purpose microprocessor that can easily store 64k bite of memory. Pdf understanding 80858086 microprocessors and peripheral. It is a 8 bit microprocessor, introduce by intel in 1976. A15 a14 a a12 a11 a10 a9 a8 a7 a6 a5 a4 a3 a2 a1 a0 chip selection location selection within the chip depending on the combination on the address lines a15 a10, the address range of the specified chip is determined. What is meant by the statement that 8085 is a 8bit microprocessor. Scribd is the worlds largest social reading and publishing site. Opcodes table of intel 8085 opcodes of intel 8085 in alphabetical order sr. This microprocessor had major improvement over the execution speed of 8085. The 8085 microprocessor is an 8bit processor available as a 40pin ic.
The address and data bus are multiplexed in this processor which helps in providing more control signals. It is a softwarebinary compatible with the morefamous intel 8080 with only two minor instructions added to support its added interrupt and serial inputoutput features. It is an nmos device having around 6200 transistors contained in a 40 pin dip package. Complete notes of microprocessor with tutorials and solutions. Microprocessor 8085 notes free download as word doc. 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. With the help of 16bit address, 8085 can access 2 16 65536 64k memory locations. Each instruction is represented by an 8bit binary value. Project using 8085 pdf a simple interfacing project with the 8085 microprocessor probability distribution formula pdf kits available in. Adisesha 1 microprocessor microprocessor is defined as a silicon chip embedded with a central processing unit or cpu. Complete notes of microprocessor with tutorials and. Intel 8085 8bit microprocessor intel 8085 is an 8bit, nmos microprocessor.
A microprocessor which has n data lines is called an nbit microprocessor i. Design a mechatronics system that uses the 8085 and pulse width modulation pwm to turn a dc motor at a speed of 60 rpm. It has 16bit address bus and hence can address up to 26165535 bytes 64kb memory location through a0a15. Pdf intel manual of 8085 microprocessor architecture pdf. It is a 40 pin c package fabricated on a single lsi chip. The 8085 machine language the 8085 from intel is an 8bit microprocessor. Microprocessor architecture, programming and applications with 8085 by rs gaonkar 2. Programming with 8085 microprocessor internal architecture of 8 bit microprocessor and its registers. The 5 in the model was added as it requires plus 5 voltages. The 8085 uses a total of 246 bit patterns to form its instruction set. With the help of 16bit address, 8085 can access 216 65536 64k memory locations. Logarithmic quantization combined with a faster microprocessor an 8085 ah2 running at 10 mhz and more efficient software should reduce this to 2. It is the set of instructions that the microprocessor can understand. The microprocessor is one of most known subject is computer engineering branch.
Let us discuss the architecture of 8085 microprocessor in. Over view of microprocessor 8085 and its application. Oct, 2012 the 8085 and address ranges now, we can break up the 16bit address of the 8085 into two pieces. If using notepad, make sure you select all files under file type when saving. It is 40 pin ic, requires 3 mhz speed of operation and clock cycle is 320 ns. How many output pins are there in microprocessor 8085. These differences are described in a short section at the end of this chapter. It is also referred to as a computers logic chip, micro chip, and processor. Instruction set of 8085 an instruction is a binary pattern designed inside a microprocessor to perform a specific function. It provides serial interfacing with serial input data sid and serial output.
To transfer the data inside the chip from one place to another it has bus system just like our buses to. The pin configuration and functional pin diagram of. Microprocessor 8085 communicates via its address bus of 2bytes width the lower byte. A microprocessor is a controlling unit of a microcomputer, fabricated on a small. Intel manual of 8085 microprocessor architecture pdf 08mtcs051. Download free sample and get upto 48% off on mrprental. It was compatible with intel 8080 but needed less support of the hardware. Click on corresponding chapter to view related notes. This is a 3byte instruction, the second byte specifies the loworder address and the third byte specifies the highorder address. Pdf chapter 4 8085 microprocessor architecture and memory. Microprocessor 8085 nortel passport 8610 pdf notes free download as word doc.
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