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

Different types of errors in measurement, Q.   Enumerate different types o...

Q.   Enumerate different types of errors in  measurement. How can these errors be minimized.                Sol. Types of errors: Errors may arise from different sources and

Find the meter reading for a sine wave, Q. ADMM (digital multimeter) reads ...

Q. ADMM (digital multimeter) reads true rms values of current. If the peak value of each of the following periodic current waves is 5 A, find the meter reading for: (a) a sine wave

Gis application architecture, GIS application architecture: GIS applic...

GIS application architecture: GIS application architecture should 1  Give a framework and the essential programming interfaces to enable complex GIS applications to be deve

Define addressing modes of 8085, Define addressing modes of 8085. a) Im...

Define addressing modes of 8085. a) Immediate addressing b) Register addressing c) Direct addressing d)  Indirect addressing e)  Implicit addressing

Basic operations of 8085 microprocessor , Basic Operations of 8085 Micropro...

Basic Operations of 8085 Microprocessor The 8085 microprocessor  performs followings  five  basic  operations . 1. Opcode Fetch :  Reading and decoding  operation code  of

Sub instruction - op code format , SUB Instruction Op code  format is...

SUB Instruction Op code  format is of SUB  instruction is Replace  the three bit code  of the register R from   to obtain the op code of the  required SUB  instruction . o

Describe small signal fet and its characteristics, Q. Describe small signal...

Q. Describe small signal FET.What are its characteristics? Small signal FET is the FETs used for amplification. The linear characteristic of FET is used for this purpose The in

Principals applied in product design, What are the broad principals that wi...

What are the broad principals that will be applied in product design to facilitate automated assembly ?

Determine vout and the power supplied, Q. An operational amplifier stage is...

Q. An operational amplifier stage is typically represented by the circuit of Figure. For the values given, determine V out and the power supplied by the 2.5-V source.

Determine the value of rl, Q For the circuit of Figure: (a) Find an...

Q For the circuit of Figure: (a) Find an expression for the power absorbed by the load as a function of R . (b) Plot the power dissipated by the load as a function of th

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