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

Rise time - power semiconductor devices , Rise  Time (t r ) During  ri...

Rise  Time (t r ) During  rise time voltage falls from 90% V a to 10%  where  V a where V a is the initial  anode  voltage. In terms  of current  time taken  by anode  curre

Find the efficiency of the transformer, Q. Athree-phase, 600-kVA, 2300:230-...

Q. Athree-phase, 600-kVA, 2300:230-V,Y-Ytrans- former bank has an iron loss of 4400 W and a full- load copper loss of 7600 W. Find the efficiency of the transformer for 70% full lo

Write a short note dispersion shifted dispersion flat fiber, Write a short ...

Write a short note on dispersion shifted and dispersion flatted fibers? The dispersion features of a fiber is display below: The overall dispersion is the sum of materi

Explain the synchronous compensators, Explain the Synchronous Compensators ...

Explain the Synchronous Compensators These are synchronous motors running without mechanical loads (or with load if required). Similar to the synchronous generators, they can a

Jfet common source amplifier, Q. JFET Common Source Amplifier? The comm...

Q. JFET Common Source Amplifier? The common source configuration for a FET is similar to the common emitter bipolar transistor configuration, and is shown in figure. The common

Show that the output will be high, Considering the TTL NAND gate circuit of...

Considering the TTL NAND gate circuit of Figure, with one or more inputs low, show that the output will be high.

Explain the high-frequency response of fet amplifier, Q. Explain the high-f...

Q. Explain the high-frequency response of FET amplifier?  The analysis for the high frequency response of the FET amplifier is almost the same as that of the BJT amplifier. The

Physics, While sitting in physics class one day, you begin to ponder the wo...

While sitting in physics class one day, you begin to ponder the workings of the analog clock on the classroom wall. You notice as the hands sweep in a continuous motion that there

Sod output - serial input output ports , SOD Output Serial output data ...

SOD Output Serial output data  single  bit can be sent  out through this pin using SIM  command  discussed in details in chapter8.

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