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

Produce a storage scope using peripheral interface control, First section ...

First section Aim: the aim of this project is to produce a storage scope using a PIC. In this project, several samples were taken from an analog signal and stored in the memo

Accelerator and investment, Q. Accelerator and Investment? Accelerator,...

Q. Accelerator and Investment? Accelerator, Investment: Investment spending stimulates economic growth that consecutively stimulates further investment spending (as businesses

Three-phase induction motor, Q. A 60-Hz, six-pole, wye-connected, three-pha...

Q. A 60-Hz, six-pole, wye-connected, three-phase induction motor, with the parameters R 1 = R 2 = 0.025  and Xl 1 = Xl 2 = 0.125 , is controlled by variable-frequency control

Explain the significance of v number, Explain the significance of V number....

Explain the significance of V number. Ans: V number or V parameter or normalized cutoff frequency is one of the parameter which is used to calculate the maximum number o

Show the dialling circuit, Q. Show the Dialling Circuit? Dialling circu...

Q. Show the Dialling Circuit? Dialling circuit enables subscriber to output signals representing digits, and this enables caller to enter destination telephone number. Dialling

Explain jmp instruction and call instruction., Explain the difference betwe...

Explain the difference between a JMP instruction and CALL instruction. A JMP instruction permanently alters the program counter. A CALL instruction leaves information on the st

How many interrupts does 8085 have, How many interrupts does 8085 have, men...

How many interrupts does 8085 have, mention them The 8085 has 5 interrupt signals; they are INTR, RST7.5, RST6.5, RST5.5 and TRAP

Illustrate gray code, (a) In the so-called folded binary code of 4 bits, th...

(a) In the so-called folded binary code of 4 bits, the left most digit represents the sign of an analog signal's quantized samples (with 0 for negative and 1 for positive), and the

Transistor configurations, TRANSISTOR CONFIGURATIONS: Transistor circu...

TRANSISTOR CONFIGURATIONS: Transistor circuits may be categorized into three configurations based on which terminal is common to both of the input and output of circuit. Th

Encoder, decimal to BCD code encoder active low

decimal to BCD code encoder active low

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