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

What are subroutines? Subroutines are program modules, which can be known  from other ABAP/4 programs or within the similar program.

Expalin the History Of Parallel Computers The researches with and implementations of use of the parallelism started long back in the 1950's by IBM Corporation. The IBM STRETCH

Explain about the value chain for a manufactured product. The products sold in shops and purchased for use within organizations are the result of a complicated web of relations

(a) Explian two limitations of dead-box analysis. (b) Describe why memory analysis is difficult. (c) With reference to the "Shadow Walker" rootkit, explain what is meant by

LINQ Providers are a set of classes that takes a LINQ query and dynamically produces a method that implements an equivalent query against an exact data source.

calculate the time complexity of a=(b/c) operation in stack

Q. Explain Passing Parameters Using Pointers ? This method overcomes the drawback of using variable names directly in procedure. It uses registers to pass procedure pointers to


Shape : A shape is any area that can be perceived to have height and width. Shapes within an image can be created by the use of line, or by the edges created by variations in c