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

Dc motor, what is the reason of low meagger result of dc motor

what is the reason of low meagger result of dc motor

Give the properties of pvc, Give the properties of PVC. PVC- It is acqu...

Give the properties of PVC. PVC- It is acquired from polymerisation of hydrogen chloride and acetylene in the presence of a catalyst as peroxides at about 50 0 C. Properties

Determine the admittance of the parallel combination, Q. The voltage across...

Q. The voltage across a parallel combination of a 100- resistor and a 0.1-µF capacitor is 10 cos(5000t +30°) V. Determine the admittance of the parallel combination and find the c

Which material used to made covers of electrical machines, The covers of el...

The covers of electrical machines are made of (A)  Soft magnetic materials.          (B) Hard magnetic materials. (C) Super conductors.                       (D) Semicond

Explain the construction of depletion mosfet, Q. Explain the construction o...

Q. Explain the construction of depletion MOSFET? A slab of p-type material is formed from a silicon base and it is referred to as the substrate. It is the foundation upon which

How to convert binary to decimal number, Q. How to convert Binary to Decima...

Q. How to convert Binary to Decimal number system? It is extremely easy to convert from a binary number to a decimal number. As like the decimal system, we multiply each digit

Obtain rated fundamental voltage across the motor, A 440-V, 60-Hz, six-pole...

A 440-V, 60-Hz, six-pole, wye-connected, squirrel-cage induction motor with a full-load speed of 1170 r/min has the following parameters per phase referred to the stator: R 1 = 0.

Determine voltage ratio for the circuit, Q. Determine v o /v i for the ci...

Q. Determine v o /v i for the circuit shown in Figure if the op amps are ideal.

Connection of shunt capacitors at distribution transformer, Connection of ...

Connection of Shunt Capacitors at  Distribution Transformer Provision of capacitors at load point is found to be hard in practice because of the additional investments needed.

Define hrq, Define HRQ? The hold demand output requests the access of t...

Define HRQ? The hold demand output requests the access of the system bus. In non- cascaded 8257 systems, this is linked with HOLD pin of CPU. In cascade mode, this pin of a sla

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