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

Evaluate the condition on the amplifier noise temperature, Alow-noise trans...

Alow-noise transducer is connected to an instrumentation system by a cable that generates thermal noise at room temperature. The information-bearing signal has a bandwidth of 6 kHz

Sub subtract instruction, SUB Subtract Instruction This  instruction  i...

SUB Subtract Instruction This  instruction  is used to  subtract the contents of any  register  or memory location from  the contents of  accumulator. There are two  formats as

Calculate the diameter of an air-filled circular waveguide, Q. Calculate th...

Q. Calculate the diameter of an air-filled circular waveguide? Unlike transmission lines, which operate at any frequency up to a cutoff value, waveguides have both upper and lo

Mr GZ, HOW TO PERFOM AUTO DIALLING USING GSM MODULE

HOW TO PERFOM AUTO DIALLING USING GSM MODULE

Details of a distribution transformer, Electrical network details: 1  ...

Electrical network details: 1          single line diagrams with conductor sizes, transformer locations, consumer location, lengths, capacitors, and load, etc., 2

Transformers, AC Operation of an iron core         ...

AC Operation of an iron core         Hence, if a wattmeter were used to measure the power delivered over a full period of the waveform (which will also b

Equivalent resistor reductions for the circuit, Q. Determine the voltages V...

Q. Determine the voltages V x using voltage division and equivalent resistor reductions for the circuits shown in Figure.

Explain multiplexing systems, Q. Explain Multiplexing Systems? A multip...

Q. Explain Multiplexing Systems? A multiplexing system is one in which two or more signals are transmitted jointly over the same transmission channel. There are two commonly us

Svd, svd calculation in matrix

svd calculation in matrix

Principles behind ecg monitoring, a) Provide pertinent summary of the basic...

a) Provide pertinent summary of the basic principles behind ECG monitoring b) Using MATLAB, provide plots of the "clean" and "noisy" ECG signals. Investigate the spectral es

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