Figure 1 shows the pin diagram of the 8085 microprocessor. The pins of a 8085 microprocessor can be classified into seven groups. For the love of physics walter lewin may 16, 2011 duration. Pin diagram of 8085 video lecture of 8085 microprocessors chapter from microprocessor subject for electronics engineering students.
Mar 01, 2018 8085 processor pin diagram explanation. Mar 16, 2020 in this article, we will discuss 8085 microprocessor pin configuration or pin diagram of 8085 or external architecture of 8085 microprocessor. Recent listings manufacturer directory get instant insight into any electronic component. Address bus these pins carry the higher order of address bus. Note that the 8086 has data bus width of 16bit, and it is able to address. Lecture note on microprocessor and microcontroller theory and. Pin diagram of 8085 microprocessor is as given below. Pin number 12 to 19 are used for data bus in microprocessor. Pin configuration of the microprocessor 8085 is shown in figure. Hence a sevensegment plus decimal point package will only require nine pins, though. Intel 8085 intel 8085 pin configuration signals and io pins 4 intel 8085 cpu block diagram the 8085 and its buses. This means that the microprocessor has an 8bit data bus, which indicates that the microprocessor is capable of handling 8 bits of data. Pdf a15a8 nsc800 a10a0 cpd1802 memory interfacing to mp 8085 8085 microprocessor 8085 microprocessor pin configuration microprocessor z 8085 im6316ijg im6316mjg im6316 u 6316 b functional pin diagram of 8085 information.
Pin diagram of 8085 and pin description of 8085 free 8085. I have made this report file on the topic 8085 microprocessor. It is a 40 pin c package fabricated on a single lsi chip. Microprocessor architecture, programming, and applications. The 20 lines of the address bus operate in multiplexed mode. The version 8085 a2 operates at a maximum frequency of 5 mhz. The time for the back cycle of the intel 8085 a2 is 200 ns. Try findchips pro for interfacing stepper motor using 8085. Software interrupts are those which are inserted in between the program which means these are mnemonics of. Jun 15, 2017 8085 microprocessor, generally pronounced as eightyeighty five microprocessor is an 8bit microprocessor. I wanted the project to be simple to build, with a minimal number of components, but yet to be a fully functional single board computer e. How many output pins are there in microprocessor 8085. The 8085 is an 8bit general purpose microprocessor that can address 64k byte of memory.
Microprocessor 8085 pin configuration electricalvoice. Jul 03, 2019 intel programmable interval timer learn microprocessor in simple and pin configuration, addressing modes and interrupts, instruction sets, programmable peripheral interface, intel a pin description, intel interfacing timer with download as word doc. The builtin clock generator of 8085, in block schematic, is shown below. Minimum mode configuration of 8086 bus timings for.
Microprocessor 8085 pin configuration in microprocessor. Aug 02, 2019 intel programmable interval timer learn microprocessor in simple and pin configuration, addressing modes and interrupts, instruction sets, programmable peripheral interface, intel a pin description, intel interfacing timer with download as word doc. Pin diagram of 8086 microprocessor is as given below. If the operand is a memory location, its location is specified by the contents of the hl registers. While in the beginning i have tried to give a general view about this topic. Interfacing stepper motor using 8085 datasheet, cross reference, circuit and application notes in pdf format. The 8085 microprocessor is an 8bit general purpose processor that can deal with the memory of 64k byte. These signals are used to identify the nature of operation. My efforts and wholehearted cocorporation of each and everyone has ended on a successful note. You can visit similar threads as well for more free pdf and get yourself updated.
Its data bus width is 8bit and address bus width is 16bit, thus it can address 216 64 kb of memory. Pin configuration of 8085 microprocessor electronics. In this article, we will discuss 8085 microprocessor pin configuration or pin diagram of 8085 or external architecture of 8085 microprocessor. Since it is a 40 pin dip ic, each side contains 20 pins. Procedure during next cycles say t2, t3 and so on, mp can use ad0ad7 as data bus to send receives data. There are 5 hardware interrupts in 8085 microprocessor.
Lecture note on microprocessor and microcontroller theory. Although this manual is designed primarily for reference, it also contains some instructional matenal to help the beginning. In common cathode all the cathodes are tied to a common pin, in this case generally ground, and the led are driven by the state of the anodes where ground is off and power is on. The microprocessor has operates at a 3mhz frequency. Microprocessor 8086 pin configuration tutorialspoint. With neat pin diagram explain the various signals of 8085 microprocessormay04. To perform the subtraction of two 8 bit numbers using 8085. By using these pins the 8086 itself generates all bus control signals in the minimum mode configuration of 8086. Pin diagram of 8085 microprocessor with description 8085 is a general purpose microprocessor having 40 pins and works on single power supply. Sc cs iv semester microprocessor and its applications unit i introduction to microprocessor evolution of microprocessor general architecture of microprocessor system architecture of 8085 a pin configuration machine language and assembly language. Ad7ad0, it carries the least significant 8bit address and data bus. The pin orientation of an 8051 microcontroller may change with the package but the pin configuration is same. If carry is present take 2s complement of accumulator. 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. These x1 and x2 pins are also called crystal input pins. It can be used as the system clock for other devices. I need ebook of control system, nagarth and gopal, and microprocessor by ramesh gaonkar. Preface this manual describes programming with intels assembly language. Tutorial on introduction to 8085 architecture and programming. Microprocessor architecture, programing and applications with 8085 by ramesh gaonkar. It has 8 data lines and 16 address lines, out of which 8 address lines are multiplexed with 8 data lines. Pin diagram and pin description of 8085 microprocessor. 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. Mvi b, 3eh move the data 3eh given in the instruction to b register. Microprocessor 8085 pin configuration in microprocessor microprocessor 8085 pin configuration in microprocessor courses with reference manuals and examples pdf. In bellow the pin configuration of 8085 microprocessor is shown in figure. 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.
Aug 24, 2015 8085 microprocessor architecture and pin description 1. Once decoded, the instruction controls the remainder of the mpu, memory and io through the timing and control block. It is a 40 pin dipdual in package ic by intel introduced in 1976. Intel 8085 8bit microprocessor intel 8085 is an 8bit, nmos microprocessor. Pin diagram 8085 microprocessor microprocessor youtube. The internal block diagram and the pin configuration of dac0808 are shown in figure below. Minimal 8085 single board computer minimax8085 malinov. 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. It has 8 data lines and 16 address lines, out of which 8 address. It reduces the number of components, allows for tweaking the configuration by reprogramming the spld, and provides an introduction to the programmable logic devices. Aug 05, 2019 8085 microprocessor pin diagram explanation pdf 1. Intel programmable interval timer learn microprocessor in simple and pin configuration, addressing modes and interrupts, instruction sets, programmable peripheral interface, intel a pin description, intel interfacing timer with download as word doc.
This processor can be work at a 3mhz of maximum frequency. Draw the pin configuration and functional pin diagram of. Apr 15, 2018 pin diagram of 8085 video lecture of 8085 microprocessors chapter from microprocessor subject for electronics engineering students. Demultiplexing of address and data bus in 8085 pdf scoop. It is an appended version of the 8080 microprocessor. The 8085 can move 8bits of data in a bidirectional direction.
Thus the pin diagram and signals of 8085 microprocessor are explained in detail. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. The chip select cs signal from the decoder of the microprocessor system is delayed and inverted to clock the latch. I have tried my best to elucidate all the relevant detail to the topic to be included in the report. Start the program by loading the first data into accumulator.
This is similar to 8085 block diagram with the following difference. The following image depicts the pin diagram of 8085 microprocessor. Microprocessor architecture, programming, and applications with the 8085, 5th edition. It is used to synchronize the operations of the 8085 microprocessor.
The serial data on this pin delivers its output to the seventh bit of the accumulator when sim instruction is executed. To generate internal clock signals, 8085 microprocessor requires external inputs from x1 and x2 pins. The following image shows the 8051 microcontroller pin diagram with respect to a 40 pin dual inline package dip. When microprocessors receive interrupt signals through pins hardware of microprocessor, they are known as hardware interrupts. Pin diagram of 8085 microprocessor with description. Microprocessor 8085 pin configuration the following image depicts the pin diagram of 8085 microprocessor. A15a8, it carries the most significant 8bits of memoryio address. Pin 4 input and pin 5 output gursharan singh tatla. Pin definitions from 24 to 31 are different for minimum mode and maximum mode. The dac0800 can be interfaced to 8085 system through an 8bit latch as shown in figure below. Microprocessor 8085 pin configuration tutorialspoint. The 8085 is one of intels earliest microprocessors. Jul 03, 2018 demultiplexing of address bus of 8085.