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

Single direction pump, Modify the design of the circuit shown in FIGURE and...

Modify the design of the circuit shown in FIGURE and draw a circuit diagram to provide rotary actuation in both directions using a single direction pump (to replace the bi-directio

Compute current in given the circuit configuration, Q. Consider the circuit...

Q. Consider the circuit configuration shown in Figure. Let V i = 1V, R 1 = 1000, R 2 = 2000, and A = 3. (a) Compute i 2 . (b) If R 1 changed to 500 , recompute i 2 .

Fiind the magnitudes of the line-to-line voltages, Q. A single-line diagram...

Q. A single-line diagram of a three-phase transformer bank connected to a load is given in Figure. Find the magnitudes of the line-to-line voltages, line currents, phase voltages,

What is dtmf dialling, Q. What is DTMF dialling? DTMF dialling 1. ...

Q. What is DTMF dialling? DTMF dialling 1.  Uses push buttons 2.  Uses 8 different frequencies in pairs. 3.  16 different characters can be represented. 4.  The f

Ral rotate accumulator left through carry instruction , RAL Rotate Accumula...

RAL Rotate Accumulator Left Through Carry Instruction This  instruction rotates the content  of the accumulator  towards left by one bit. The D 0 bit moves to D 1   bit moves

Compute force vector, Q. Consider a current element I 1 d ¯l 1 = 10 dz ¯a...

Q. Consider a current element I 1 d ¯l 1 = 10 dz ¯az kA located at (0,0,1) and another I 2 d ¯ l 2 = 5dx ¯ax kA located at (0,1,0). Compute d ¯F 21 and d ¯F 12 experienced by

Outdoor termination for cables, Outdoor Termination for Cables - Measures f...

Outdoor Termination for Cables - Measures for Improving Connection Outdoor terminations for paper insulated or PILCA cables were generally used without much of a problem. With

What do you know about input impedance, Q. What do you know about Input Imp...

Q. What do you know about Input Impedance? Input Impedance  : Amplifiers will be quoted as having a specific input impedance. The sort of load it will place on preceding equipm

Describe about transmission-line voltage regulation, Q. Describe about tran...

Q. Describe about transmission-line voltage regulation? The transmission-line voltage regulation (TLVR) is the ratio of the per-phase voltage drop between the sending-end and r

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