Interrupt signals - pins and signals , Electrical Engineering

Assignment Help:

Interrupt Signals

There are five  interrupt  signals in 8085 microprocessor.  These  signals  are used to inter rut the  current  program  under  execution and  transfer the execution to a predefined interrupt service routine (ISR)  stored at location  reserved for the  corresponding  interrupt signal. These  interrupt signals have a  predefined  priority. If more than  one interrupt signals  goes high  simultaneously  the interrupt  has higher  priority will be  given  first response. Followings  are various  interrupts defined  priority wise.

TRAP  it is a no maskable interrupt  which  cannot  be disabled  and has highest priority.

RST 7.5  RST 6.5 RST 5.5 These are maskable vectored interrupt called restart interrupts. Priority order  of these  interrupts is RST 7.5 RST 6.5 and then RST  5.5 .

INIR called  interrupt request it is a general  purpose non vectored interrupt. It  has lowest priority  among all  above interrupts. It  requires an external hardware to transfer the execution to one  of the eight  possible  locations.

Other  than  these  input  interrupt signals  one more  signal  is related to interrupts  defined below.

INTA it is  called  interrupt  acknowledge signal. It is an  active low output  signals. In  goes low  when  microprocessor receives high  INIR  signals.

All these  interrupts  will discussed in detail in chapter 8.


Related Discussions:- Interrupt signals - pins and signals

Electrical machine, Explain the principle of induction applied in electrica...

Explain the principle of induction applied in electrical machine

Piezo crystal osillator, whether piezo crystal and quazt crystal oscillator...

whether piezo crystal and quazt crystal oscillator are same?

Find the voltage drop and current through each component, A 15 volts source...

A 15 volts source is applied to a series 150 μH inductor and 169 pF capacitor. The resistance of the inductor plus the connecting wires is 1,6 Ω. Determine the voltage drop and

Determine the forced component of the voltage, Q. Consider an RL series cir...

Q. Consider an RL series circuit excited by (a) v(t) = 20e -2t V, and (b) v(t) = 20 V. Determine the forced component of the voltage across the inductor for R = 2  and L = 2H.

Sketch the depletion mosfet drain characteristics, Q. Sketch the depletion ...

Q. Sketch the depletion MOSFET drain characteristics The depletion-type MOSFET has a structure similar to that of the enhancement-type MOSFET with one important difference: The

What are concentrators, Q. What are concentrators? Elucidate how it helps i...

Q. What are concentrators? Elucidate how it helps in connecting number of subscribers. Ans: In rural areas, subscribers are usually dispersed. It is both expensive and unn

Body effect, Body Effect The body effect explains the changes in the th...

Body Effect The body effect explains the changes in the threshold voltage through the change in the source-bulk voltage, approximated by the subsequent equation: In whi

Digital control system, block diagram of digital control system and explain...

block diagram of digital control system and explain each block

Explain the operation of the counter, Q. Figure shows the mod-8 counter whi...

Q. Figure shows the mod-8 counter which counts from 010 to 710 before resetting. Explain the operation of the counter and sketch the timing diagram.

Magnetic field, how magnetic field is related to electric field

how magnetic field is related to electric field

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