LGA (Land Grid Array) is a planar grid array package, which is applied to High speed logic LSI circuit.

The bottom surface is fabricated with an array state electrode contact package, and when assembling, Just plug it into the socket.

There are 227 contacts (1.27 mm center distance) and 447 contacts (2.54 mm center distance).

GA can accommodate more input in a smaller package than QFP Input and output pins.