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 current for given capacitance values, Q. Consider the circuit...

Q. Consider the circuit of Figure. Determine and sketch i L (t) and v C (t) for capacitance values of (a) 1/6 F, (b) 1/8 F, and (c) 1 / 26 F. Note that the capacitance values ar

Find a minimum two level, Find a minimum two level, multiple-output AND-OR ...

Find a minimum two level, multiple-output AND-OR gate circuit to realize these functions (eight gates minimum). F 1 (a,b,c,d) =Σm(10,11,12,15) +D (4,8,14) F 2 (a,b,c,d) =Σm(4

Adaptive control process in motor-speed control system, Q. Adaptive control...

Q. Adaptive control process in motor-speed control system? Figure illustrates the adaptive control process as applied to a motor-speed control system, which is based on adjus

Distinguish between paramagnetic and diamagnetic materials, Distinguish bet...

Distinguish between paramagnetic and diamagnetic materials, mentioning at least one example of each. Paramagnetic Materials: The atoms of these materials have permanent magne

Digital electronic, how many data input and data output line for 8k 16-bits...

how many data input and data output line for 8k 16-bits?

How many simultaneous calls can be made during peak time, Q. In a hundred-...

Q. In a hundred-line exchange 24 two-motion selectors are used. Draw schematic you suggest for this exchange and illustrate its working. How many simultaneous calls can be made du

Scatter Diagrams - Quality Tools for Improvement, Scatter Diagrams - Qualit...

Scatter Diagrams - Quality Tools for Improvement Scatter diagrams are graphical tools which attempt to depict the influence in which one variable has on another. A general dia

For carry flag - return instructions , For Carry Flag  RC (Return of ...

For Carry Flag  RC (Return of Carry) and RNC ( Return on no Carry) Instruction RC returns from  the subroutine  to the calling  program if carry  flag is et (CY= 1). The

Realize the function f by a k map using 0s, Q. Given the following truth ta...

Q. Given the following truth table: (a) Realize the function f by a K map using 0s. (b) Realize the function f by a K map using 1s.

Electrostatic sprayer, I would like to know the materials needed for electr...

I would like to know the materials needed for electrostatic sprayer.

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