Clk outputclock output is used as the system clock for peripheral and devices interfaced with the microprocessor. To study the pin diagram we group the signals into 5 categories. The microprocessor you are using might be a pentium, a k6, a powerpc, a sparc or any of the many other brands and types of microprocessors, but they all do approximately the same thing in approximately. Over view of microprocessor 8085 and its application. The maximum memory attached to the 8085 microprocessor is 64 kb. Due to this reason, in the 40 pin ic of 8086 microprocessor, 8 pins i. 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. Most of the 8088 pins and their functions are exactly similar to the corresponding pins of 8086. Pin configuration of 8085 microprocessor electronics.
Pin diagram of 8086 microprocessor is as given below. The 8085 is an 8bit general purpose microprocessor that can address 64k byte of memory. It, also known as central processing unit cpu is like an artificial brain. Microprocessor 8085 communicates via its address bus of 2bytes width the lower. Microprocessor 8085 pin configuration electricalvoice. Introduction to instruction set for 8085 microprocessor duration.
Adding more features to the 8080 microprocessors, 8085 was developed where it can address up to 64kb. Draw the pin configuration and functional pin diagram of. Microprocessor 8085 pin configuration tutorialspoint. Draw the pin configuration and functional pin diagram of p 8085. It provides serial interfacing with serial input data sid and serial output. The pin diagram of 8088microprocessor, assembly language.
The pins of a 8085 microprocessor can be classified into seven groups. 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. Learn about the pin diagram, description of 8085 microprocessor. In this article you will get to know about the definition, architecture, block diagram and working of. Refer functions of all the 8085 pins below in the table.
Appreciate the detailed explanation of address and data bus. Ad7ad0, it carries the least significant 8bit address and data bus. A15a8, it carries the most significant 8bits of memoryio address. Lecture note on microprocessor and microcontroller theory and. The signals dtr, iom, sso might be decoded to interpret the activities of the microprocessor as in minimum and maximum mode. The signals from the pins can be grouped as follows.
Pin diagram of 8085 microprocessor with description. 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. Pin diagram and description of 8086 microprocessor. Mvi b, 3eh move the data 3eh given in the instruction to b register. With the support of nmos technology, 8085 microprocessor was developed by intel in the year 1977. Pin diagram of intel 8085 microprocessor electronics and. In minimum mode, the pin 880 is logically equivalent to the s8 in maximum mode. Pin diagram of intel 8085 microprocessor sreejith hrishikesan july 01, 2019. All these hardware modules as part of 8085 architecture have been shown in the figure with its respective pins used in 8085 chip.
Microprocessor 8085 notes free download as word doc. The time for the back cycle of the intel 8085 a2 is 200 ns. Unit1 introduction to 8086 ece department microprocessors and microcontrollers page 2 iv address bus. This pin is similar to mio pin of 8086, but it givesan 8085 compatible memoryio bus interface. The microprocessor 8086 is a 16bit cpu available in different clock rates and packaged in a 40 pin cerdip or plastic package. It is the number of bits processed in a single instruction. Unit1 introduction to 8086 ece department microprocessors and microcontrollers page 1 uniti introduction to 8086 contents at a glance. Law of conservation of angular momentum statement and derivation.
It determines the number of operations per second the processor can perform. Pin diagram of 8085 and pin description of 8085 free 8085. When the signal on this pin is low for at least 3 clocking cycles, it forces the microprocessor to reset itself. Mar 16, 2020 in this article, we will discuss 8085 microprocessor pin configuration or pin diagram of 8085 or external architecture of 8085 microprocessor. But before that have a look at the pin diagram of 8086 microprocessor. This article discusses what is a 8085 microprocessor, pin configuration of 8085, which includes address bus, interrupts, rd, wr, ready, hold, hlda, intr. To study the various types of instructions provided by 8085 to study the pin diagram and the signals of various pins of 8085. We will discuss the pin description in this section. The following image depicts the pin diagram of 8085 microprocessor. Microprocessor 8085 pin configuration the following image depicts the pin diagram of 8085 microprocessor. The 20 lines of the address bus operate in multiplexed mode. Lets be clear on the concepts of the 8085 microprocessor, its pin diagram, architecture and many more.
Its data bus width is 8bit and address bus width is 16bit, thus it can address 216 64 kb of memory. Assembly language assignment help, the pin diagram of 8088microprocessor, pin diagram of 8088. Pin diagram and pin description of 8085 microprocessor. On these lines the cpu sends out the address of the memory location that is to be written to or read from. Lecture note on microprocessor and microcontroller theory. It is 40 pin ic, requires 3 mhz speed of operation and clock cycle is 320 ns. It is the set of instructions that the microprocessor can understand. The address bus consists of 16, 20, 24, or more parallel signal lines.
The microprocessor is the heart of any normal computer, whether it is a desktop machine, a server or a laptop. Apr 10, 2020 8085 microprocessor pin diagram explanation pdf 1. Intel 8085 8bit microprocessor intel 8085 is an 8bit, nmos microprocessor. In this article you will get to know about the definition, architecture, block diagram and working of 8085 microprocessor. The pin configuration and functional pin diagram of. Pin diagram of 8085 microprocessor is as given below. The computer you are using to read this page uses a microprocessor to do its work. The photo image is shown in figure and pin diagram is shown in figure. 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.
The address and data bus are multiplexed in this processor which helps in providing more control signals. Microprocessor is a brain of every complex electronic gadget that is it is processing device of every computing device. It is an appended version of the 8080 microprocessor. Jan 29, 2018 52 videos play all microprocessor 8085 tutorials point india ltd.
Tutorial on introduction to 8085 architecture and programming. Demultiplexing address and data bus using ale address latch enable. 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. Figure 1 shows the pin diagram of the 8085 microprocessor. Introduction, features and pin diagram introduction to 8085 microprocessor.
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