Programmable Logic ICs are integrated circuits that implement digital logic functions which can be configured by the user after manufacturing. Unlike fixed-function logic devices, their internal logic resources and interconnections can be programmed to realize different hardware logic designs.

These devices provide a flexible way to build and modify digital logic, supporting design changes and feature updates without altering the underlying silicon.

• Core concept: User-configurable digital logic implemented within an IC
• Key characteristic: Reprogrammable or configurable behavior compared with standard logic ICs
• Common families: CPLDs, FPGAs, and related programmable logic devices