a Define setup time b State the types of setup time and expl

a) Define setup time b) State the types of setup time and explain each type in two or three sentences c) Calculate setup time using following information, It took two hours to change over from job A to job B. It took an additional 2 hours to get a good piece made and verified.

Solution

a) Period required to prepare a device, machine, process, or system for it to be ready to function or accept a job. It is a subset of cycle time. It is the interval before the clock where the data must be held stable.

b) Types of setup time are:

Setup time is the minimum amount of time the data signal should be held steady before the clock event so that the data is reliably sampled by the clock.

Hold time is the minimum amount of time the data signal should be held steady after the clock event so that the data is reliably sampled.

Aperture is the time from the setup through the hold time, relative to the clock signal. Input signals (such as data) should be held steady throughout this time period.

Recovery time is like setup time for asynchronous ports (set, reset). It is the time available between the asynchronous signals going inactive and the active clock edge.

Removal time is like hold time for asynchronous ports (set, reset). It is the time between active clock edge and asynchronous signal going inactive

c) Setup time would be 2 hours because that is the time to change over from job A to job B