Name the modes of 8255 programmable peripheral interface, Computer Engineering

Assignment Help:

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

 


Related Discussions:- Name the modes of 8255 programmable peripheral interface

What is store program control, What is store program control (SPC)?  I...

What is store program control (SPC)?  In  stored  program  control  systems,  a  set  of  instructions  or  program  to  the computer  is  stored  in  its  memory  and  instru

Explain the logic symbols - flip flops, Explain the Logic symbols - Flip Fl...

Explain the Logic symbols - Flip Flops? These flip-flops are as well called Master-Slave flip-flops simply because their internal construction is divided into two sections. Th

What is the significance timescale directive, What is the significance Time...

What is the significance Timescale directive? Defines time units and simulation precision (smallest increment). Syntax 'timescale TimeUnit / PrecisionUnit TimeUnit =

How many methods used to control traffic flowing in-out, How many methods u...

How many methods used to control traffic flowing into and out of the network by firewall? Firewalls utilize one or more of three ways to control traffic flowing into and out of

Differentiate between programming tools and authoring tools, Diffrentiate p...

Diffrentiate programming tools and authoring tools Distinction between programming tools and authoring tools is not at first obvious. Though, authoring tools require less techn

Computer arcticture, what is the main goal of parallel processing

what is the main goal of parallel processing

Why is translation look-aside buffers important, Why is Translation Look-as...

Why is Translation Look-aside Buffers (TLBs) important? The implementation of page-table is completed in the following manner: Page table is maintained in main memory.

How address resolution is performed with table lookup, How address resoluti...

How address resolution is performed with table lookup? Explain with the help of a suitable example. The approach of table lookup to address resolution needs a data structure wh

Give example of real time processing, Give example of Real time (transactio...

Give example of Real time (transaction) processing Using this illustration of booking seats on a flight, below sequence of events would occur: -  Customer/travel agent conta

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd