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

Emi, what is strain gage

what is strain gage

Desirable requirements of a generic photo-detector, Question : a) Stat...

Question : a) State six desirable requirements of a generic photo-detector. b) A gallium arsenide pin photo-diode has an intrinsic layer of width 1 μm. The diode is revers

Diod, explain the application of the Si,zener,and LED diodes

explain the application of the Si,zener,and LED diodes

What is meant by regulation, Q. What is meant by regulation? The output...

Q. What is meant by regulation? The output of most power supplies should be a constant voltage. Unfortunately, this is difficult to achieve. There are two factors that can caus

Calculate the unknown thermal conductivity, Derive the mathematical 3-D hea...

Derive the mathematical 3-D heat conduction equation in Spherical Coordinates? A furnace is made up of three layers of thicknesses 250 mm, 150 mm nad 100 mm with thermal conduct

Its use in civil engineering, applications of electronics device (bjt,mosfe...

applications of electronics device (bjt,mosfets) in civil engineering

What is positive clipper, Q. What is positive clipper? Give 2 types of its ...

Q. What is positive clipper? Give 2 types of its applications ? In the series positive clipper, when the input voltage is positive, the diode does not conduct and acts an open

Write some disadvantages of loosely coupled systems, Write some disadvantag...

Write some disadvantages of loosely coupled systems More complicated due to the needed additional communication hardware. They are less portable and more expensive because o

How do you modify the direction of rotation of a d.c. motor, Q. How do you ...

Q. How do you modify the direction of rotation of a D.C. motor? Ans: The direction of rotation of DC motor will be changed either by changing the field winding connections o

Representation of magnetic fields, The direction of the magnetic field line...

The direction of the magnetic field lines is given by 'Maxwell's Right-Hand corkscrew rule'  The thumb of the right hand indicates the direction of current flow in the wire and

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