Micro-processor – i/o interfacing overview – tutorialspoint

Contents

If we are executing any instruction, we want the micro-processor to gain access to the memory for studying instruction codes and also the data kept in the memory. With this, both memory and also the micro-processor requires some signals to see from and email registers.

The interfacing process includes some important aspects to complement using the memory needs and micro-processor signals. The interfacing circuit therefore ought to be designed in a way it matches the memory signal needs using the signals from the micro-processor.

IO Interfacing

There are numerous communication devices such as the keyboard, mouse, printer, etc. So, we have to interface the laptop keyboard along with other devices using the micro-processor by utilizing latches and buffers. This kind of interfacing is called I/O interfacing.

Block Diagram of Memory and that iOrTo Interfacing

Interfacing

8085 Interfacing Pins

If we are executing any instruction, we want the micro-processor to gain access to the memory for studying instruction codes and also the data kept in the memory. With this, both memory and also the micro-processor requires some signals to see from and email registers.

The interfacing process includes some important aspects to complement using the memory needs and micro-processor signals. The interfacing circuit therefore ought to be designed in a way it matches the memory signal needs using the signals from the micro-processor.

IO Interfacing

There are numerous communication devices such as the keyboard, mouse, printer, etc. So, we have to interface the laptop keyboard along with other devices using the micro-processor by utilizing latches and buffers. This kind of interfacing is called I/O interfacing.

Block Diagram of Memory and that iOrTo Interfacing

Interfacing

8085 Interfacing Pins

Following may be the listing of 8085 pins employed for interfacing along with other devices −

  • A15 – A8 (Greater Address Bus)
  • AD7 – AD0(Lower Address/Data Bus)
  • ALE
  • RD
  • WR
  • READY

Methods for Communication − Micro-processor using the Outdoors World?

There’s two methods for communication where the micro-processor can interact with the outdoors world.

  • Serial Communication Interface
  • Parallel Communication interface

Serial Communication Interface − In this kind of communication, the interface will get just one byte of information in the micro-processor and transmits it piece by piece to another system serially and vice-a-versa.

Parallel Communication Interface − In this kind of communication, the interface will get a byte of information in the micro-processor and transmits it piece by piece to another systems in synchronised (or) parallel fashion and vice-a-versa.

Resourse: https://tutorialspoint.com/micro-processor/

Interfacing With 8085 Microprocessor