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

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

Khalid, i need to rewrite 24 pages of engineering research.

i need to rewrite 24 pages of engineering research.

Calculate sending-end voltage at 0.9 pf lagging, A three-phase, 34.5-kV, 60...

A three-phase, 34.5-kV, 60-Hz, 40-km transmission line has a per-phase series impedance of 0.2+j0.5/km. The load at the receiving end absorbs 10 MVA at 33 kV. Calculate the follow

Lki load register pair immediate instruction , LKI  Load Register pair  ...

LKI  Load Register pair  Immediate  Instruction This instruction is used to copy or  load  16 bit  data specified  in the  instruction  directly into  the register pair. The i

For an n-channel jfet find voltage, Q. For an n-channel JFET with V A = 35...

Q. For an n-channel JFET with V A = 350 V, I DSS = 10 mA, and V P = 3V, find V DS that will cause i D = 11 mA when v GS = 0.

Bad effects of armature reactions, Q.  What is meant by armature reaction....

Q.  What is meant by armature reaction. Explain briefly the bad effects of armature reactions.   Sol. By armature reaction is meant the effect of magnetic field set up

Explain shockly''s equation and its significance, Q. Explain shockly's equa...

Q. Explain shockly's equation and its significance in plotting the transfer characteristics ? The linear relationship does not exists in the output of the JFET, the relationshi

Illustrate working of application layer, Q. Illustrate working of Applicati...

Q. Illustrate working of Application Layer? As the highest layer in OSI reference model, application layer provides services to users of OSI environment. Layer

Compute the theoretical and practical frequency ranges, Q. For an RG-290/U ...

Q. For an RG-290/U aluminum rectangular wave - guide, a = 58.42 cm and b = 29.21 cm. Compute the theoretical and practical frequency ranges of operation for the guide.

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