Name the modes of 8255 programmable peripheral interface, Computer Engineering

What are the different modes in that 8255 Programmable Peripheral Interface (PPI) can operate? 

  • 24 I/O lines in 3-8-bit port groups - A, B, C
  • A, B can be 8-bit input or output ports
  • C can serve as 2-4-bit input or output ports
  • 3 modes of operation:

- Mode 0: A, B, C simple input or output level sensitive ports

- Mode 1: A, B input or output ports with strobe control in C

- Mode 2: A is bidirectional with control/handshake in B and C

 

Posted Date: 8/20/2013 1:19:14 AM | Location : United States







Related Discussions:- Name the modes of 8255 programmable peripheral interface, Assignment Help, Ask Question on Name the modes of 8255 programmable peripheral interface, Get Answer, Expert's Help, Name the modes of 8255 programmable peripheral interface Discussions

Write discussion on Name the modes of 8255 programmable peripheral interface
Your posts are moderated
Related Questions
Q. Show the example of internet address? The following can be a typical person understandable address on Internet: VVS @ expertsmind.us VVS is an username which in gene

What is Read only memory (ROM) and Define the Use of it? A simple kind of ROM can be constructed from a decoder, Or gates, and a number of wires. Input

This method is used to make sure that Swing components are updated by the event-dispatching thread.


What is asynchronous DRAM? In asynchronous DRAM, the timing of the memory device is controlled asynchronously. A specialized memory controller circuit gives the essential contr

Which of the following is the fastest logic ECL, TTL, CMOS or LSI ? Ans. The fastest logic is ECL.

Cache Memories - computer architecture: Speed of the primary memory is very low in comparison with the speed of processor For well performance, the processor can't spend

Question: (a) A computer network can be a LAN or a WAN. Using appropriate diagrams and examples, explain what you understand by the term LAN. Your answer should also explain

Explain at least one modulation technique used for high speed modems. FSK - Frequency Shift Keying: In such technique the frequency of the carrier signal is changed as per to

Determine a program that is in execution is known as Program in execution is known as Process