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

Rlc - rotate accumulator left instruction , RLC  Rotate Accumulator Left I...

RLC  Rotate Accumulator Left Instruction This  instruction also rotates the contents of the accumulator towards  left by one bit. The  D 0 bit  moves  to D 1  bit moves to D

project, I want to make project plz help me n gove me idea about actually ...

I want to make project plz help me n gove me idea about actually its my first year in electrical engineering thts why Ineed help hpfully you will reply soon

Design of matching networks for amplifiers, Design a low noise amplifier us...

Design a low noise amplifier using an Infineon RF transistor BFP640. The amplifier is to be used to amplify the L2 GPS signal and so the centre frequency is 1227MHz and bandwidth 4

What is an usart, What is an USART? USART stands for universal synchron...

What is an USART? USART stands for universal synchronous/Asynchronous Receiver/ Transmitter. It is a programmable communication interface that can communicate by using either s

Determine the bits required for a d/a converter, Q. Determine the bits requ...

Q. Determine the bits required for a D/A converter to detect 1-V change when V ref = 15 V.

Derive lames equation for a thick cylinder, Derive Lame's equation for a th...

Derive Lame's equation for a thick cylinder subjected to internal pressure with clean diagrams. Evaluate the maximum and minimum hoop stresses across the section of a pipe of400

Obtain voltage sing the laplace transform method, Obtain v(t) in the circui...

Obtain v(t) in the circuit of Figure by using the Laplace transform method.

The octal butters 74ls244, The Octal Butters 74LS244 It has  two group ...

The Octal Butters 74LS244 It has  two group  of four  buffer with  no inverted tri state  output ,  controlled by  two active  low  enable lines  (1G and 2G)  as shown in figur

Fourier deconstruction, Find the Fourier series as far as the third harmoni...

Find the Fourier series as far as the third harmonic, to represent the periodic function y, given by the values in the following table. x 0 o 30

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