What are the basic modes of operation of 8255, Electrical Engineering

Assignment Help:

What are the basic modes of operation of 8255?

There are two basic modes of operation of 8255, viz.

1. I/O mode.

3. BSR mode.

In I/O mode, the 8255 ports work as programmable I/O ports, while

In BSR mode only port C (PC0-PC7) can be used to set or reset its individual port bits. Under the IO mode of operation, further there are three modes of operation of 8

255, So as to support dissimilar types of applications, viz. mode 0, mode 1 and mode 2.

Mode 0 - Basic I/O mode

Mode 1 - Strobed I/O mode

Mode 2 - Strobed bi-directional I/O

 


Related Discussions:- What are the basic modes of operation of 8255

Lack of accountability - high technical usage, Lack of Accountability - Hig...

Lack of Accountability - High Technical Usage In huge, complex and widespread ST&D networks such as ours, the subsequent factors pose problems in arriving at reasonable estima

What is meant by thermal runaway in a transistor, Q. What is meant by therm...

Q. What is meant by thermal runaway in a transistor ? When current flows through the collector circuit, it produces heat at the collector junction. This increases the temperatu

What is independent bus request scheme, What is independent bus request sch...

What is independent bus request scheme? Each of the master's needs a pair of request and grant pins which are connected to the controlling logic. The busy line is common for al

How transistor will be used as an amplifier, (a) How transistor will be use...

(a) How transistor will be used as an amplifier? (b) Give relation between α and β? (c) Show the biasing arrangement for the PNP transistor in common base configuration, so t

Features of tariff policy, Features of tariff policy: For projects who...

Features of tariff policy: For projects whose tariff is determined by performance- based cost of service regulation, the advantages of decreased tariff after full depreciation

Cmos integrated circuit design, design using softwares (LEdit7, LTspice) t...

design using softwares (LEdit7, LTspice) the project has many aspects and I would like you to check them on the website with my personal password. in the project specifications (d

Electricity, Describe the nature of electricity

Describe the nature of electricity

Calculation of AT&C loss, how to make a matlab program for calculation of A...

how to make a matlab program for calculation of AT&C loss for perticular area

Explain periodic signals and fourier series, Q. Explain Periodic Signals an...

Q. Explain Periodic Signals and Fourier Series? In the study of analog systems, predicting the response of circuits to a general time-varying voltage or currentwaveformx(t) is

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