macrocell; hard macro

A characterized fixed layout and interconnection of primitives that implement an electrical function.

NOTE Characterization may be done either by measurement of fabricated devices or by computer simulation or by both. Characterization may include the following aspects: physical dimensions, logic functionality, testability, layout-rule compliance, ac and dc electrical performance, and reliability.

References: 

JESD12-1B, 8/93
JESD99B, 5/07