The microprocessor is one of most known subject is computer engineering branch. It operates on 8bit data and uses 16bit address to access the memory. Mvi b, 3eh move the data 3eh given in the instruction to b register. It is an nmos device having around 6200 transistors contained in a 40 pin dip package. It is a 40 pin c package fabricated on a single lsi chip. Instruction set of 8085 an instruction is a binary pattern designed inside a microprocessor to perform a specific function. Its data bus is 8bit wide and hence, 8 bits of data can be transmitted in parallel from or to the microprocessor. The intel 8085 eightyeightyfive is an 8bit microprocessor produced by intel and introduced in march 1976. In view of the complex nature of topics, the author has designed the book as a selfstudy material for the students in his signature style.
Tutorial on introduction to 8085 architecture and programming. Pdf an introduction to microprocessor 8085 researchgate. It is also referred to as a computers logic chip, micro chip, and processor. Complete notes of microprocessor with tutorials and solutions. What is the technology used in the manufacture of 8085. These signals are used to identify the nature of operation. Project using 8085 pdf a simple interfacing project with the 8085 microprocessor probability distribution formula pdf kits available in. To find the smallest number in an array of data using 8085 instruction set. Each instruction is represented by an 8bit binary value. Kaushik and others published an introduction to microprocessor 8085 find, read and cite all the research you need on researchgate. The architecture of microprocessor 8085 can be divided into seven parts. These are the status signals used to indicate type of operation. As discussed earlier, 8085 microprocessor was introduced by intel in the year 1976.
Kaushik and others published an introduction to microprocessor 8085 find, read and cite all the research you need on. Flag is a flip flop used to store the information about the status of the processor and the. Central processing unit cpu is carved on a single chip is called a microprocessor. Intel 8085 8bit microprocessor shrimati indira gandhi. 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. Arithmetic instructions of 8085 instruction set of 8085 microprocessor microprocessor duration.
An assembler is a software tool a program designed to simplify the task of writing computer programs. Feb 12, 2012 arithmetic instructions of 8085 instruction set of 8085 microprocessor microprocessor duration. A15a8, it carries the most significant 8bits of memoryio address. The 8085 machine language the 8085 from intel is an 8bit microprocessor. As the name suggests, 8085 microprocessor and its applications attempts to explain the basic concepts of programming and interfacing techniques using intel 8085 microprocessor as an example, including system design applications based on 8085 microprocessor. The pins of a 8085 microprocessor can be classified into seven groups. 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. Lecture note on microprocessor and microcontroller theory and. Introduction to microprocessor by adithya p mathur, tata mcgraw hill publishers, new delhi 5.
The reason for the difference is that some actually most instructions have multiple different formats. It was compatible with intel 8080 but needed less support of the hardware. Click on corresponding chapter to view related notes. Lecture note on microprocessor and microcontroller theory vssut. Ad7ad0, it carries the least significant 8bit address and data bus. Microprocessor 8085 notes free download as word doc. These differences are described in a short section at the end of this chapter. To transfer the data inside the chip from one place to another it has bus system just like our buses to.
The time for the back cycle of the intel 8085 a2 is 200 ns. Microprocessor 8085 pin configuration tutorialspoint. 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. Let us discuss the architecture of 8085 microprocessor in. Adisesha 1 microprocessor microprocessor is defined as a silicon chip embedded with a central processing unit or cpu. This is a 3byte instruction, the second byte specifies the loworder address and the third byte specifies the highorder address. Gaonkar, microprocessor architecture, programming, and applications. This book was first published in 1984 and it has been in the field for nearly three decades. The 8080 processor was updated with enabledisable instruction pins and interrupt pins to form the 8085 microprocessor.
A microprocessor is a controlling unit of a microcomputer, fabricated on a small chip capable of. The architecture of a microprocessor is to be learnt in terms of registers, memory. The chapter wise class notes of microprocessors in pdf files listed below are compiled by er. Tybsc electronic instrumentation ii mumbai university. The following image depicts the pin diagram of 8085 microprocessor. Introduction fundamentals of microprocessor 8085 and. Programming diffelences between the 8080 and the 8085 micro processors are relatively minor. Microprocessors darshan institute of engineering and technology. With the help of 16bit address, 8085 can access 2 16 65536 64k memory locations. Intel 8085 8bit microprocessor intel 8085 is an 8bit, nmos microprocessor.
Microprocessor short question and answer pdf examradar. Refer 8085 microprocessor internal architecture before understanding 8085 programming mentioned on this page. The entire group of instructions that a microprocessor supports is called instruction set. This was introduced by the intel company in the year 1977 to 1990. The 8085 microprocessor is an 8bit processor available as a 40pin ic. It generates signals within the microprocessor unit to carry out instruction which has been decoded. It takes care of data movement as required so that alu operations can be performed. Microprocessor 8085 communicates via its address bus of 2 bytes width the. Its data bus width is 8bit and address bus width is 16bit, thus it can address 216 64 kb of memory.
Microprocessor architecture, programming and applications with 8085 by rs gaonkar 2. What is meant by the statement that 8085 is a 8bit microprocessor. The 8 most significant bits of the address are transmitted by the address bus, pins a 8, to a 15. The 8085 uses a total of 246 bit patterns to form its instruction set. Comprehensive study of microprocessor by naresh grover 4. It is a device or rather say a integrated chip which process some instructions given to it in microseconds. The ebook has complete chapters on microprocessor and it is usually included. This microprocessor is an update of 8080 microprocessor. A microprocessor which has n data lines is called an nbit microprocessor i. 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 from below link microprocessor shortquestionandanswer pdf.