Hold and Halt states of 8085 microprocessor
Explain hold and halt states of the 8085 microprocessor.
Expert
If HOLD line of the 8085 found high, µP enters into the HOLD state and provides out a HLDA (Hold acknowledge) signal. After identifying the HOLD signal, the µP delays executing any further machine cycles and tri-states the A and AD buses and also the IO/M, RD and WR lines. At the time of the HOLD state, the peripheral devices may gain control of data and address buses for sending the data to or from the memory in the direct manner. This mode of operation is known as direct memory access (DMA). Whenever a HLT instruction is executed, µP enters into the HALT state. It will stop microprocessor. The registers and the status flags stay unaffected. The µP may get out of this state only one clock cycle after the valid interrupt is identified or the RESET happens.
Explain the valid objectives for the incident reports?
A battery is joined to a resistive load and a current of 10mA flows by the load along with a voltage drop across this of 10V. While the load resistance is increased by 10 percent the load voltage increases by 1 percent. Determine the internal resistance of the battery
State the benefits of the spread spectrum technique?
Excess minority carriers are injected within a thin slice of doped semiconductor of uniform cross-sectional region and are permitted to diffuse across the material. There diffusion coefficient for the material is 50cm2s-1 as well as the minority
Provide some significant Design methods you could follow when doing the Layout for Digital Circuits?
Describe the machine cycle of 8051?
DRAW AND DESCRIBE THE NO LOAD PHASOR DIAGRAM OF A SINGLE PHASE TRASFORMER
Explain the functions of the port 3 of 8051?
Write down the advanced database systems.
What do you mean by op-amp? Illustrate briefly.
18,76,764
1961089 Asked
3,689
Active Tutors
1447482
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!