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

C R O DELAY LINE, WHAT IS THE FUNCTION OF DELAY LINE IN CRO

WHAT IS THE FUNCTION OF DELAY LINE IN CRO

Get the equivalent inductance at terminal in circuit, Get the equivalent in...

Get the equivalent inductance at terminal in circuit: Acquire the equivalent inductance at terminal AB in circuit shown in Figure. Solution Inductances also follow the

Resistors, Difference between linear and non-linear resistors

Difference between linear and non-linear resistors

Define smoothing the output, Define Smoothing the Output? The output of...

Define Smoothing the Output? The output of a DAC is stepped, such as the analog waveforms which were sampled and held. This stepped, or staircase effect is a distortion, and it

Explain overhead lines and transformers, Explain Overhead Lines and Transfo...

Explain Overhead Lines and Transformers? Overhead lines absorb reactive power when fully loaded. A line with a current I A, a line reactance of X L ?/phase absorbs I 2 X L V

Complete the timing diagram of an sr latch, Complete the timing diagram of ...

Complete the timing diagram of Figure of an SR latch.

Compute the required value of external series resistance, A 200-V dc shunt ...

A 200-V dc shunt motor has a field resistance of 200  and an armature resistance of 0.5 . On no load, the machine operates with full field flux at a speed of 1000 r/min with an a

Discuss how wavelet transform is suitable, Q. Discuss how Wavelet Transform...

Q. Discuss how Wavelet Transform is suitable for each application below. You can give examples  if you need to. a) multi-resolution analysis of signals and images b) space-fr

Self inductance , Self Inductance If a current is passed through a co...

Self Inductance If a current is passed through a coil, it creates a flux within the coil. Any attempt to change this flux will create a back emf that acts to oppose the chang

Determine potential difference across resistor, Determine Potential Differe...

Determine Potential Difference: Compute the current through each element of the given network and also determine potential difference across 15 Ω resistor. Figure

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