8085 Microprocessor

March 26, 2024 Post a Comment

8085 microprocessor

8085 is pronounced as "eighty-eighty-five" microprocessor. It is an 8-bit microprocessor designed by Intel in 1977 using NMOS technology. It is used in washing machines, microwave ovens, mobile phones, etc.

Which language is used in microprocessor 8085?

For e.g. assembly language of 8085 is different than that of Motorola 6800 microprocessor Page 8 Microprocessor understands Machine Language only! Machine independent languages are called – High-level languages – For e.g. BASIC, PASCAL,C++,C,JAVA, etc.

What is the importance of 8085?

It provides status, control and timing signals, which are required for the operation of memory and I/O devices. 8085 System Bus: Microprocessor communicates with memory and other devices (input and output) using three buses: Address Bus, Data Bus and Control Bus.

What is the memory of 8085?

The memory capacity is 64 KB. Also 8085 Can Perform Operation Up to 28 i.e. 256 numbers. A number greater than this is to taken multiple times in 8 bit data bus.

Why is it called 8085?

Techopedia Explains Intel 8085 The Intel 8085 was one generation above the Intel 8080, with the "5" in its name actually indicating that it only needed a single +5-V power supply as opposed to the 8080, which needed both a positive and a negative 5-V supply, as well as another +12-V supply.

How many pins are there in 8085?

The 8085 is supplied in a 40-pin DIP package. To maximise the functions on the available pins, the 8085 uses a multiplexed address/data (AD0-AD7) bus.

How many bits are there in 8085?

The 8085 has six general-purpose registers to store 8-bit data; these are identified as- B, C, D, E, H, and L. These can be combined as register pairs – BC, DE, and HL, to perform some 16-bit operation. These registers are used to store or copy temporary data, by using instructions, during the execution of the program.

Which stack is used in 8085?

This preview shows page 106 - 108 out of 139 pages. 6. Which Stack is used in 8085?- LIFO (Last In First Out) stack is used in 8085.In thistype of Stack the last stored information can be retrieved first.

Which IC is used in 8085?

8085 is a 8 bit microprocessor which operates at the clock frequency of 3.07Mhz.It provides 24 programmable input output lines using 8255 IC which is known as PPI I.e. Programmable Peripheral Interface).

How many memory places are in 8085?

Each memory location has a physical address which is a code. The CPU can use the code to access the memory location.

What are the different modes of 8085?

In 8085 microprocessor there are 5 types of addressing modes:

Immediate Addressing Mode – In immediate addressing mode the source operand is always data.
Register Addressing Mode – ...
Direct Addressing Mode – ...
Register Indirect Addressing Mode – ...
Implied/Implicit Addressing Mode –

How many bytes is 8085?

In 8085, the length is measured in terms of “byte” rather than “word” because 8085 microprocessor has 8-bit data bus. Three types of instruction are: 1-byte instruction, 2-byte instruction, and 3-byte instruction. In 1-byte instruction, the opcode and the operand of an instruction are represented in one byte.

What is the size of 8085 processor?

Hence, the maximum accessible memory capacity of 8085 microprocessor is 216 Bytes or 64 kB. The 8085 microprocessor consists of an on-chip oscillator of 3 MHz. Basically, it is called 8-bit microprocessor because its ALU (arithmetic logic unit) size is of 8-bit.

What is the size of PC in 8085?

PC is a 16-bit register. It contains a memory address. PC contains that very memory address from where the next instruction is to be fetched for execution.

How many data lines are there in 8085?

Intel 8085 is an 8-bit microprocessor which has 16 address line for 16-bit address of a memory location. 8 higher order address bits are transferred through 8 bit lines out of this 16 address line while remaining lower order 8 bits of the address are sent through another 8 lines multiplexed with the 8-bit data lines.

What are the three types of bus in 8085?

There are three types of buses.

Address bus – It is a group of conducting wires which carries address only.
Data bus – It is a group of conducting wires which carries Data only. ...
Control bus –

What are the 5 flags in 8085?

In 8085 microprocessor, the flags register can have a total of eight flags. Thus a flag can be represented by 1 bit of information. But only five flags are implemented in 8085. ... And they are:

Carry flag (Cy),
Auxiliary carry flag (AC),
Sign flag (S),
Parity flag (P), and.
Zero flag (Z).

What is the clock speed of 8085?

8085 operates on a clock frequency of 3MHz–6MHz depending upon the version selected. Clock is provided by a crystal oscillator of 2 times the frequency, so as to produce a 50% duty cycle clock.

How many operations can 8085?

A total of 246 operational codes and 80 instructions are present. As the 8085 microprocessor has 8-bit input/output address lines, it has the ability to address 28 = 256 input and output ports.