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

Basic architecture of digital switching systems, Q. Explain the basic archi...

Q. Explain the basic architecture of digital switching systems. Explain in detail companding. Ans: A simple N X N time division space switch is displayed in Figure. Switch

Core functionalities of the gis, Core Functionalities of the GIS: The...

Core Functionalities of the GIS: The GIS should be able to: 1          Create layers from all supported data sources involving coverage feature classes, shape files, compu

Refrigeration and airconditioning, Ask question #Minimum 100 words acceptTh...

Ask question #Minimum 100 words acceptThere are various refrigeration systems employing various methods. State any seven (7) refrigeration systems, mention the method(s) employed t

What are tightly coupled systems, What are tightly coupled systems or close...

What are tightly coupled systems or closely coupled systems? In a tightly coupled systems the microprocessor (either coprocessor or independent processors) might be share a com

Finite state machine, the tutorial assignment is part of my thesis work and...

the tutorial assignment is part of my thesis work and i need help in it please

Amplifiers, what is the use of capacitors in amplifiers

what is the use of capacitors in amplifiers

Compute the efficiency of the transformer, Compute the efficiency of the tr...

Compute the efficiency of the transformer of Example corresponding to (a) full load, 0.8 power factor lagging, and (b) one-half load, 0.6 power factor lagging, given that the input

Lossy transmission line, Q. The model of an elemental length of a lossy tra...

Q. The model of an elemental length of a lossy transmission line is shown in Figure (a), along with its parameters, where R is series resistance per unit length, L is serie

Control system, what is the difference between the continuous time system ...

what is the difference between the continuous time system and discrete time system and their advnatages?

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