The program counter pc, contains the address of the next instruction. It is a 40 pin c package fabricated on a single lsi chip. The pins serve a particular function in minimum mode single. This processor can be built with electronic logic circuits that are fabricated using the technologies like vlsi very large scale integration or lsi large scale integration. According to function, first we will group pins which have similar function. The serial port, rs232c can use for hex file downloading. Timing diagram 8085 microprocessor microprocessor 1 study notes for eeec boards. Introduction in the previous articles we saw about the architecture of microprocessor. The pins on 8085 chip can be grouped into 6 groups. Unit1 1 draw and explain the internal architecture of 8085. Ad7ad0, it carries the least significant 8bit address and data bus. Here you can download the free lecture notes of microprocessor and interfacing pdf notes mpi notes pdf materials with multiple file links to download. Addressing modes of 8085 to perform any operation, we have to give the corresponding instructions to the microprocessor.
The 8985 microprocessor the 8085a commonly known as the 8085 is an 8 bit generalpurpose microprocessor i. This kit will teach us the operation of the 8085 microprocessor with machine coding. Here the content of b register is copied to the accumulator. A draw the pin diagram of 8085 micro processor and give. In addition to the above mentioned registers intel 8085 microprocessor also contains address buffer and dataaddress buffer. Questions on 8085 microprocessor pdf 3 accumulator based microprocessor example are. It is the set of instructions that the microprocessor can understand. Sadaf media basic microprocessor s intel 4004 and 8085. Also learn about the various signals used in 8085 microprocessor including instructions such as rim, sim, sid, sod, iom. Intel 8085 microprocessor is the next generation of intel 8080 cpu family. The pins of a 8085 microprocessor can be classified into seven groups. Pin diagram and description of 8086 microprocessor.
The maximum memory attached to the 8085 microprocessor is 64 kb. Intel 8085 8bit microprocessor intel 8085 is an 8bit, nmos microprocessor. Microprocessor and interfacing notes pdf mpi pdf notes book starts with the topics vector interrupt table, timing diagram, interrupt structure of 8086. Microprocessor and interfacing pdf notes mpi notes pdf.
Learn about the interrupts,maskable and nonmaskable interrupts. Microprocessor tutorial tutorialspoint microcontroller can be considered. The intel 8085 is a general purpose 8bit microprocessor capable of addressing up to 64 kb of memory. In each instruction, programmer has to specify 3 things.
Features of 8085 it is an 8 bit processor it is a single chip nmos device with 40 pins. Microprocessor 8085 pin configuration the following image depicts the pin diagram of 8085 microprocessor. Overview of 8085 microprocessor u00be 8085 architecture u2022 pin diagram u2022 functional block diagram m. Download file fundamentals of microprocessor8085 and. The following image depicts the pin diagram of 8085 microprocessor.
Demultiplexing address and data bus using ale address latch enable. Pin diagram and pin description of 8085 microprocessor. 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. These signals are used to identify the nature of operation. If you continue browsing the site, you agree to the use of cookies on this website. In this tutorial, we will discuss the architecture, pin diagram and other key concepts of. In addition to being faster than the 8080, the 8085 had the following enhancements. The resulting design includes 8085 cpu, 8251 usart, 32 kib sram, 32 kib or 16 kib rom. Microprocessor and computer organization module4 microprocessor 8085 pin diagram part2 ec target ies the pdf file of the lecture. 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.
The 8085 is an 8bit general purpose microprocessor that can address 64k byte of memory. 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. Interfacing 8155 with 8085 microprocessor pdf in what way and differs and features. Like the pin configuration of 8085 microprocessor, the 8086 microprocessor also contains 40 pins dual in line however, unlike the 8085 microprocessor, an 8086 to have better performance, operates in 2 modes that are minimum and maximum mode.
Microprocessor 8085 notes free download as word doc. Pin diagram of 8085 microprocessor is as given below. I have made this report file on the topic 8085 microprocessor. It determines the number of operations per second the processor can perform. Appreciate the detailed explanation of address and data bus. Microprocessor 8085 pin configuration tutorialspoint. It reduces the number of components, allows for tweaking the configuration by reprogramming the spld, and provides an introduction to the. Microprocessor 8085 architecture free pdf file sharing. Architecture of intel 8085 microprocessor features of 8085 intel 8085 is an 8bit, nmos microprocessor.
Microprocessor 8085 pin configuration electricalvoice. Any module could be a processor capable of being a bus. The pin configuration and functional pin diagram of. Sab 8155 p instruction set of 8088 microprocessor sab 3210 internal block diagram of 8088 8088 microprocessor pin out diagram 8283a 8088 microprocessor 8286 transceiver 8284a pin configuration text. Pin diagram of 8086 microprocessor is as given below. Learn about the pin diagram, description of 8085 microprocessor. Draw the pin configuration and functional pin diagram of p 8085. A15a8, it carries the most significant 8bits of memoryio address. To study the various types of instructions provided by 8085 to study the pin diagram and the signals of various pins of 8085. The 8086 operates in single processor or multiprocessor configuration to achieve high performance. File type pdf microprocessors and microcontrollers architecture.
We can use gpio led for testing and debug the program. Loosely coupled configuration has shared system bus, system memory, and system io. Address bus data bus control and status signals power supply. The address and data bus are multiplexed in this processor which helps in providing more control signals. The signals from the pins can be grouped as follows. Clock oscillator and system controller were integrated. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. It is the number of bits processed in a single instruction. Microprocessors and microcontrollers 8085, 8086 and 8051. The internal logic design of a microprocessor is called architecture which. It is an appended version of the 8080 microprocessor. It uses a gal16v8 atf16v8 simple programmable logic device spld instead of discrete logic ics for the address decode and the frequency divider for usart. The stack pointer is incremented by 1 and the micrporocessor of that memory location are copied to the highorder register b, d, h, a of the operand.
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