Practice these mcq questions and answers for preparation of various competitive and entrance exams. Pin diagram and pin description of 8085 microprocessor. Microprocessor 8086 pin configuration in microprocessor microprocessor 8086 pin configuration in microprocessor courses with reference manuals and examples pdf. In the maximum mode, there may be more than one microprocessor in the system. It has 2 gnds as circuit complexity demands a large amount of current flowing through the circuits, and multiple grounds help in dissipating the accumulated heat. Pdf 28pin timing diagram of 8086 maximum mode 80186 intel 80188 pin diagram of 80186 8086 minimum mode and maximum mode timing diagram of 8086 minimum mode intel 82188 80188 8087 minimum mode configuration of 8086 a to d converter interface with 8086. Address bus a8a15 the address bus pins are ranges from a8 to a15 and these are mainly. The following pin function descriptions are for 8086 systems in either minimum or maximum mode. In this mode the cpu issues the control signals required by memory and io devices. It is available at pin 34 and used to indicate the transfer of data using data bus d8d15. The microprocessor 8086 is a 16bit cpu available in different clock rates and packaged in a 40 pin dip or plastic package. In this mode, the processor derives the status signal s2, s1, s0. Pin diagram and pin description of 8085 microprocessor 8085 is a 40 pin ic, the signals from the pins can be grouped as follows power supply and clock signals.
Another chip called bus controller derives the control signal using this status information. It has 2 gnds as circuit complexity demands a large amount of current flowing through the circuits, and multiple grounds help in dissipating the accumulated heat etc. It causes the 8086 to initialize registers ds, ss, es, ip and flags to all zeros. These lines constitute the time multiplexed memoryio. The 8086 operates in single processor or multiprocessor configuration to achieve high performance. Maximum mode 8086 system in the maximum mode, the 8086 is operated by strapping the mnmx pin to ground.
The 20 lines of the address bus operate in multiplexed mode. Ale for the latch is given by 8288 bus controller as there can be. Register organization general data register the registers ax, bx, cx and dx are the general purpose 16bit registers. Microprocessor 8086 pin configuration in microprocessor. Pin diagram of 8086 microprocessor video lecture of 8086 microprocessor chapter from microprocessor subject for electronics engineering. When only one 8086 cpu is to be used in a micro computer system the 8086 is used in the minimum mode of operation.
Upon removal of the reset signal from the reset pin, the 8086 will fetch its next instruction from the 20 bit physical address ffff0h. The pins serve a particular function in minimum mode single processor mode and other function in maximum mode. Intel 8086 specification sheet pdf download manualslib. Hardware architecture of intel 8086 pin diagram and pin details minmax mode hardware organization of address space control signals coprocessor and multiprocessor configuration io interfaces prof. It is directly compatible with 8086 software and 80808085 hardware and peripherals. A directory of objective type questions covering all the computer science subjects. Ale for the latch is given by 8086 as it is the only processor in the circuit. Mc6800 microprocessor 8212 block diagram dice op200 microprocessor 8085 application mc6800 pin diagram op07 dac8043 ad5443 op77 text.
Pin diagram and pin description of 8086 microprocessor. 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. It can prefetches upto 6 instruction bytes from memory and queues them in order to speed up instruction execution. The 8086 is a 16bit microprocessor chip designed by intel corporation in between early 1976 and mid1978. It uses 5v dc supply at v cc pin 40, and uses ground at v ss pin 1 and 20 for its operation. Pin diagram of 8085 microprocessor is as given below. The busy pin of 8087 is connected to this pin of 8086. The processor has attributes of both 8and 16bit microprocessors.
It uses 5v dc supply at v pin 40, and uses ground at v pin 1. 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. Pdf on oct 18, 2017, hadeel n abdullah and others published lecture 2. The 8086 operates in both single processor and multiple processor. Minimum mode configuration of 8086 bus timings for. Pin diagram and description of 8086 microprocessor. The intel 8088, released july 1, 1979, is a slightly modified chip with an external 8bit data bus allowing the use of cheaper and fewer supporting ics, and is notable as the processor used in the original ibm pc design. 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.
Microprocessor 8085 pin configuration electricalvoice. Bus in these descriptions is the direct multiplexed bus interface connection to the 8086 without regard to additional bus buffers. Where the hmos is used for highspeed metal oxide semiconductor. The signals pinned out of 8086 are shown in figure 11. Al can be used as an 8bit accumulator for 8bit operations. Intel 8086 is built on a single semiconductor chip and packaged in a 40 pin ic package. Maximum mode of 8086 is designed to implement 3 basic multiprocessor configurations. Note that the 8086 microprocessor have two pins labeled gnd both must be connected to. This microprocessor had major improvement over the execution speed of.
Microprocessor 8086 pin configuration tutorialspoint. Multiple choice questions on microprocessor topic 8086 instruction set. The address bus has 8 signal lines a8 a15 which are. Pin configuration of 8086 microprocessor computer science. Microprocessor multiple choice questions and answers8086.
Here, two 74ls373 transparent latches are used to demultiplex the addressdata bus connections ad 7ad 0 and the multiplexed addressstatus connections a 19 s 6a 16 s 3 as shown. In maximum mode there can be multiple processors with 8086, like 8087 and 8089. The pin configuration and functional pin diagram of. The 8086 microprocessor is a16bit, nchannel, hmos microprocessor. Pin diagram of 8086 microprocessor microprocessor youtube. The 8086 operates in both single processor and multiple processor configurations to achieve high performance levels. This microprocessor had major improvement over the execution speed of 8085. Draw the pin configuration and functional pin diagram of p 8085. Let us now discuss in detail the pin configuration of a 8086 microprocessor. There are two modes of operation for intel 8086 namely the minimum mode and the maximum mode. Usually the letters l and h specify the lower and higher bytes. Intel 8086 is built on a single semiconductor chip and packaged in a 40pin ic package. The maximum mode is selected by applying logic 0 to the. View and download intel 8086 specification sheet online.
Ax is used as 16bit accumulator, with the lower 8bits of ax designated as al and higher 8bits as ah. Microprocessor 8086 pin configuration in microprocessor tutorial. Pin diagram of 8086 microprocessor is as given below. Pin diagram is shows all the signal pins used by the microprocessor and the sequence of the signals and their connections. The reset signal to 8086 can be generated by the 8284.
542 1385 1078 175 347 605 955 1024 824 653 677 1318 1057 1152 1126 1069 973 76 487 889 1249 818 342 1160 1450 12 1194 1175 81 1099 158 776 737 937 428 1446 1285