How is 8255 (programmable peripheral interface) configured, Electrical Engineering

Assignment Help:

How is 8255 (Programmable Peripheral Interface) configured if its control register contains 9B h.

Ans.

1669_Programmable Peripheral Interface.png

Programmable Peripheral Interface

Command Byte B (sets or resets any bits in port C)

1196_control register.png

BH => 1001 1011 =>

6b5=00-> Mode0

4=0-> Port A as input

3=1-> Port C as input (PC7-PC4)

2=0-> Mode 0

1=1-> Port B as input

0=1-> Port C as input (PC3-PC0).


Related Discussions:- How is 8255 (programmable peripheral interface) configured

Transients in r-l-c circuits, Transients in R-L-C circuits: Scenario ...

Transients in R-L-C circuits: Scenario The Laplace transform is a valuable mathematical tool which allows the solution of difficult differential equations to be easily de

Explain about the term embedded system, Explain about the term embedded sys...

Explain about the term embedded system. An embedded system is a system which has software embedded within computer-hardware that makes a system dedicated for an application(s)

Transfer characteristics , Transfer Characteristics The  transfer char...

Transfer Characteristics The  transfer characteristics of power MOSFET   transfer characteristic shown the variation of ID with V GS    denote the drain current  with shorted

Show bandwidth of the system, A communication system for a voice-band (3 kH...

A communication system for a voice-band (3 kHz) channel is designed for a received SNR E b /N 0 at the detector of 30 dB when the transmitter power is Ps =-3 dBW. Find the value o

What is stored program control, Q. What is Stored Program Control ? Sto...

Q. What is Stored Program Control ? Stored Program Control:Modern digital computers use stored programmed concept. Here, a program or a set of instructions to the computer is s

Classify the materials based on the energy bands, Classify the materials ba...

Classify the materials based on the energy bands and explain them. Classification of materials based on energy bands: With reference to various band structures demonstrate

Write explanatory notes on 8284 clock generator, Write explanatory notes on...

Write explanatory notes on 8284 Clock generator. The 8284 is an ancillary element to the microprocessors. Without this clock generator, a few additional circuits are needed to

Fourier deconstruction, Fourier Deconstruction Find the Fourier series ...

Fourier Deconstruction Find the Fourier series as far as the third harmonic, to represent the periodic function y, given by the values in the following table.

Dpr preparation, DPR PREPARATION: 1.  Asset Management 2.  System O...

DPR PREPARATION: 1.  Asset Management 2.  System Operations and Despatch 3.  Field Operations 4.  Customer Processes 5.  Corporate Processes The details covered

Image gradient, Image gradient Write an m-file "grad.m" which computes ...

Image gradient Write an m-file "grad.m" which computes and displays gradient and orientation of an input image (use Gaussian derivatives). To compute Gaussian derivative in o

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