Mc6800 microprocessor 8212 block diagram dice op200 microprocessor 8085 application mc6800 pin diagram op07 dac8043 ad5443 op77 text. The 8086 microprocessor is a16bit, nchannel, hmos microprocessor. The following pin function descriptions are for the 80868288 system in maximum mode i. Write an assembly language program of 8085 to combine two hex nibbles. Pin diagram and description of 8086 microprocessor. The pins of a 8085 microprocessor can be classified into seven groups. The intel 8085ah is a complete 8bit parallel central processing unit cpu. Only the pin functions which are unique to maximum mode are described. Page 2 the atlas ii disk drive has two locations where user configurable jumpers are found. The following image depicts the pin diagram of 8085 microprocessor. The pentium pro processor is the sixth generation microprocessor i. 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.
Pin diagram of 8085 microprocessor is as given below. D7 do z80cpu data bus bidirectional, tristate this bus is used to transfer all data and commands between the z80cpu and the z80pio. It is an 8bit microprocessor which was introduced by intel in the year 1976 using nmos technology. Where the hmos is used for highspeed metal oxide semiconductor. There are 5 interrupt pins in 8085 used as hardware interrupts, i. Nta is not an interrupt, it is used by the microprocessor for sending acknowledgement. It is very important to know the pin configuration of 8085 microprocessor before study the 8085 microprocessor programming. Microprocessor 8085 pin configuration the following image depicts the pin diagram of 8085 microprocessor.
Tutorial on introduction to 8085 architecture and programming. Pin diagram 8085 microprocessor microprocessor youtube. To study the various types of instructions provided by 8085 to study the pin diagram and the signals of various pins of 8085. 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 is a 40 pin c package fabricated on a single lsi chip. Micro processor 8085 questions and answers by ramesh kumar. 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.
Also learn about the various signals used in 8085 microprocessor including instructions such as rim, sim, sid, sod, iom. Lecture note on microprocessor and microcontroller theory. Pdf an introduction to microprocessor 8085 researchgate. It is directly compatible with 8086 software and 8080 8085 hardware and peripherals. Pin diagram of 8085 microprocessor with description. The microprocessor 8086 is a 16bit cpu available in different clock rates and packaged in a 40 pin dip or plastic package. The pin configuration and functional pin diagram of. Here, we will describe intel 8085 as it is one of the most popular 8bit microprocessor.
Intel 8085 is an 8bit, nmos microprocessor designed by intel in 1977. Pin description the following describes the function of each pin. Pin diagram of 8085 microprocessor with description 8085 is a general purpose microprocessor having 40 pins and works on single power supply. These signals are used to identify the nature of operation. Each instruction is represented by an 8bit binary value. Introduction to microprocessor 6 the 8085 interrupts the 8085 has 5 interrupt inputs. The details of each pin connected with this block are described below, chip select a low on this input pin enables the communication between the 8085 and mpu. The microprocessor 8086 is a 16bit cpu available in different.
Pdf merger module used to merge the pdf file located under one directory. The pins serve a particular function in minimum mode single processor mode and other function in maximum mode. When this pin is low, it accesses io and when high it access memory. Minimal 8085 single board computer minimax8085 malinov. The processor has attributes of both 8and 16bit microprocessors. Draw the pin configuration and functional pin diagram of p 8085. The resulting design includes 8085 cpu, 8251 usart, 32 kib sram, 32 kib or 16 kib rom. Pin diagram and pin description of 8085 microprocessor. The signals from the pins can be grouped as follows. Intel 8085 8bit microprocessor intel 8085 is an 8bit, nmos microprocessor. This pin is used to distinguish a memory access or an io accesses.
Microprocessor 8085 pin configuration electricalvoice. Microprocessor 8085 pin configuration tutorialspoint. Intel 8086 is built on a single semiconductor chip and packaged in a 40 pin ic package. Kaushik and others published an introduction to microprocessor. It operates on 8bit data and uses 16bit address to access the memory.
M io becomes valid in the t4 state preceding a bus cycle and remains valid until the final t4 of the cycle. The most significant 8 bits of the memory address or the 8 bits of the i0 address,3 stated. Default configured to the whole sites folder in drupal. Interrupt service routine isr a small program or a routine that. Learn about the pin diagram, description of 8085 microprocessor. The 8086 operates in single processor or multiprocessor configuration to achieve high performance. Learn about the interrupts,maskable and nonmaskable interrupts. Instruction set of 8085 an instruction is a binary pattern designed inside a microprocessor to perform a specific function.
The 8085 microprocessor is an 8bit general purpose processor that can deal with the memory of 64k byte. Pin diagram of 8085 video lecture of 8085 microprocessors chapter from microprocessor subject for electronics engineering students. Use this information to get started using your internet and modem, and as a future reference for understanding the status and more advanced features available. Pin configuration of 8085 microprocessor electronics. A15a8, it carries the most significant 8bits of memoryio address. 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. Draw the pin configuration and functional pin diagram of. Actually it is known as update of the microprocessor. In this article, we will discuss 8085 microprocessor pin configuration or pin diagram of 8085 or external architecture of 8085 microprocessor. Intel 8086 microprocessor is the enhanced version of intel 8085 microprocessor. Ad7ad0, it carries the least significant 8bit address and data bus. What is the pin diagram and function of each pin of 8085.
Demultiplexing address and data bus using ale address latch enable. With the help of 16bit address, 8085 can access 216 65536 64k memory locations. It is an appended version of the 8080 microprocessor. Pin no name function 1 vss ground pin 2 vcc power supply pin of 5v 3 vee used for adjusting the contrast commonly attached to the potentiometer. It reduces the number of components, allows for tweaking the configuration by reprogramming the spld, and provides an introduction to the.
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