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

Determine the cpi load latency, Question: (a) Describe the following te...

Question: (a) Describe the following terminologies: i. Branch ii. Branch Prediction iii. Branch Predictor iv. Branch Misprediction (b) Consider that 15% of instructi

Logic gates, what component will be use for making or logic gates.

what component will be use for making or logic gates.

What is extended data output ram, What is extended data output RAM? EDO...

What is extended data output RAM? EDO RAM: A slight modification to the DRAM structure changes the device in an EDO (extended data output) DRAM device. Inside the EDO memory, a

Pneumatic circuit diagram, FIGURE shows a pneumatic circuit diagram used fo...

FIGURE shows a pneumatic circuit diagram used for air supply and exhaust in an automatic control system.  (a) Name all symbols (including pipelines) used in the system. (b) N

Resume, who to write resume for job

who to write resume for job

High frequency induction heaters or magnetic fields, High Frequency Inducti...

High Frequency Induction Heaters or Magnetic Fields : If this type of equipment is in use, large currents may be induced in any nearby metallic object or circuit, which will in tu

Show applications for dc machines, Q. Show Applications for DC Machines? ...

Q. Show Applications for DC Machines? Dc motors find wide applications in which control of speed, voltage, or current is essential. Shunt motors with constant speed are used fo

The internal resistance of the zener diode, A 9.1V zener diode has a nomina...

A 9.1V zener diode has a nominal voltage fall at a test current of 28mA. The internal resistance of the zener diode is 5 ohms. Find the voltage drop across the zener diode at zener

Explain the johnson counters, Explain the Johnson Counters? The Johnson...

Explain the Johnson Counters? The Johnson counters are a variation of standard ring counters with the inverted output of the last stage fed back to the input of the first stage

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