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

Addition of two sinusoids, Connect the 2 kHz (sin ωt) signal to input A of ...

Connect the 2 kHz (sin ωt) signal to input A of the "Adder" module Connect input B to ground (GND). Connect the outputof the"Adder"(GA+gB) to input A-CH1 of "Scope Selector".

The value of resistance in the regulator circuit, A zener regulator consume...

A zener regulator consumes a zener diode with an internal zener resistance of 5 ohm and the value of resistance in the regulator circuit is 82 ohm. If the supply voltage alters by

Economic analysis of hydropower, find the net value of power if an average ...

find the net value of power if an average value of energy is assumed to be $0.05/KWh, the capacity value is $30/kw-yr ...

When mt2 is negative and g is positive , When MT 2 is Negative  and g is ...

When MT 2 is Negative  and g is positive In this  case  gate  current  flows  through  junctions P 2 N 2   electrons  are injected from  N 2   layer to  P 2   a result  junct

Decision making, Decision  Making The rhombus diamond symbol  is used...

Decision  Making The rhombus diamond symbol  is used to represent  the decision making  process  as shown  below.                                          Figure  De

Digital ecectronics, DISIGN A FENITE STATE MACHINE TO DETECT THE SEQUENCE 1...

DISIGN A FENITE STATE MACHINE TO DETECT THE SEQUENCE 10110

Slack running fit, Illustrate the conventional representations of the follo...

Illustrate the conventional representations of the following guide to the selection of Fits: (i) Slack Running Fit (ii) Loose Running Fit (iii) Easy Running Fit (iv) No

Control signals - pins and signals , Control Signals There are two  con...

Control Signals There are two  control  signals and one  special  (ALE) in this  category. All these  signals  are output  signals. RD  (Read  signal ) it is  an active low

Reasons for the augmentation of electromagnetic radiation, Question: Ge...

Question: General EMC Knowledge (a) Give 2 reasons for the augmentation of electromagnetic radiation in urban regions. (b) Pointe aux Diable bears its name due to the a

Performance mapping & implementation plan - power supply, Importance Perfor...

Importance Performance Mapping & Implementation Plan - Power Supply Another data presentation device in which several managers find appealing is the significance-performance m

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