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

Mr, what is pole core and pole shoe in a dc machine

what is pole core and pole shoe in a dc machine

Determine the rate at which the magnitude falls, Q A high-pass filter circu...

Q A high-pass filter circuit is shown in Figure. Using a PSpice program and PROBE, obtain the Bode magnitude plot for the transfer function ¯H(f) = ¯V out / ¯V in for frequency ra

Di disable interrupts instruction, DI Disable  Interrupts Instruction ...

DI Disable  Interrupts Instruction The interrupt enable  flip flop is reset and all the  interrupts of 8085 microprocessors  except  TRAP  are disabled . the  instruction  form

Oscillator circuit with the help of block diagram, Q. Explain the condition...

Q. Explain the conditions to be satisfied for sustained oscillations in an oscillator circuit with the help of block diagram. The essential condition for sustained oscillations

Consider four cases of operation and explain jk flip-flop, Q. J and K are t...

Q. J and K are the external inputs to the JKFF shown in Figure. Note that gates 1 and 2 are enabled only when the clock pulse is high. Consider the four cases of operation and expl

Explain the properties and application of glass, Explain the properties and...

Explain the properties and application of glass. Glass: Ordinary glass is a fine insulator but is too brittle to be used for anything although scientific instrument parts, accu

#boiler troubles, Ask question #Minimum 300 words accepted#

Ask question #Minimum 300 words accepted#

Partial fraction expansion for z transformation, how should I calculate in...

how should I calculate inverse z transform of 1/0.729z^-1+0.729z+1.5314

Define integrated circuits, Q. Define Integrated circuits? For the fabr...

Q. Define Integrated circuits? For the fabrication of semiconductor circuits, there are three distinct technologies employed: 1. Discrete-component technology, in which each

Show the output voltage waveform, Question: a) For the circuits shown i...

Question: a) For the circuits shown in figure a and in figure b, show the output voltage waveform V0(t) if a sinusoidal signal with peak value of 5V is applied and the dc suppl

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