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

What do you mean by sensors or transducers, Q. What do you mean by Sensors ...

Q. What do you mean by Sensors or Transducers? In almost all engineering applications there arises a need tomeasure some physical quantities, such as positions, displacements,

Explain negative test cases for testing mobile phones, Negative test cases...

Negative test cases for testing mobile phones are: 1.taking out the SIM card and made a call  2. by invalid phone number 3. Made a call at which there is no tower signa

Write a note on the application of emitter-follower, Q. Write a note on the...

Q. Write a note on the application of emitter-follower? An emitter follower can serve as a buffer for a voltage source. The voltage divider at left is a poor voltage source bec

Determine the transformer winding currents, Q. Three single-phase 100-kVA, ...

Q. Three single-phase 100-kVA, 2400:240-V, 60-Hz transformers (each ofwhich has an equivalent series impedance of 0.045+j0.16 referred to its low-voltage side) are connected to fo

What do you mean by pinch off voltage, Q. What do you mean by Pinch off vol...

Q. What do you mean by Pinch off voltage? As the voltage Vds is increased from 0 to a few volts, the drain current will increase as  determined by Ohm's law and the plot of Id

FLOW CHART TO RUN MOTOR, IFYOU AVE TWO DC MOTOR,RELAY,TWO BATTERYAND MICROC...

IFYOU AVE TWO DC MOTOR,RELAY,TWO BATTERYAND MICROCONTROLLER FLOW CHART TO RUN MOTOR AND CONTROL TWO BATTERIES

Classification of solids insulators semiconductor condutors, Classification...

Classification of Solids into Insulators, Semiconductor and Conductors A solid can conduct electric current if the electrons can move in it. This is possible only when an ener

Explain the asynchronous up-down counters, Explain the Asynchronous Up-Down...

Explain the Asynchronous Up-Down Counters? In some applications a counter must be able to count both down and up and the circuit below is a 3-bit up-down counter. It counts do

Determine the output voltage, Q. In a differentiating circuit, R=10 kW,and ...

Q. In a differentiating circuit, R=10 kW,and C=2.2μF.If the input voltage goes from 0V to 10 V at a constant rate in 0.4s, determine the output voltage. Solution: e 0 =

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