Requirement (“shall” statement)
Beginner
One clear, checkable promise the chip must keep, with its own ID number.
Novice
One sentence using “shall”, with its own ID, a number to hit, the conditions it applies under, where it came from, and how it will be checked: by test, analysis, inspection or demonstration.
Expert
Good requirements are single, verifiable, attainable and traceable. A target needs conditions: “≤ 5 W” means nothing without the workload, temperature and manufacturing corner it applies at. Words like fast, small or robust are banned because nobody can verify them.
Explained in Specification (Design Flow).
See also: Requirements traceability, Verification plan (testplan).