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

Describe abrasive grit size, Describe the effect of following parameters. ...

Describe the effect of following parameters. Abrasive grit size. Amplitude and frequency of vibration.

Basic aspects of electromechanical energy converters, Q. Basic aspects of e...

Q. Basic aspects of electromechanical energy converters? Whereas detailed differences and particularly challenging problems emerge among various machine types, this section bri

Evaluate the straight-line and actual gain response, Q. Consider the circui...

Q. Consider the circuit shown in Figure in the time domain aswell as in the s-domain. Its transfer function V 2 (s)/V 1 (s) can be shown to be  which is a second-order bandpass tra

Compute the motor speed, Consider the 220-V, 1800-r/min dc motor, controlle...

Consider the 220-V, 1800-r/min dc motor, controlled by a three-phase fully controlled rectifier from a 60-Hz ac source. The armature-circuit resistance and inductance are 1.5  and

Rectifier, wave form of half wave rectifier with rl load

wave form of half wave rectifier with rl load

Deviations from purchasing power parity, Q. Does the existence of non-trada...

Q. Does the existence of non-tradable goods allow for deviations from Purchasing Power Parity? Answer: Yes the continuation of non-tradable goods permits deviations from Purch

Determine the dielectric constant of slab, Determine the Dielectric constan...

Determine the Dielectric constant of slab: An air capacitor contains two parallel plates 10 cm 2 in area and 0.5 cm apart. While a dielectric slab of area 10 cm2 and thicknes

What are shift register counters, What are Shift Register Counters? Two...

What are Shift Register Counters? Two of the main common types of shift register counters are the Ring counter and the Johnson counter and They are basically shift registers wi

Oscilloscope, Describe in detail the construction and working of digital ty...

Describe in detail the construction and working of digital type oscilloscope.

Function of circuit - breaker, Q. Function of circuit - breaker, difference...

Q. Function of circuit - breaker, difference between circuit breaker and 'isolator'? Ans: The function of circuit breaker is to break the electrical continuity in the event o

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