Patent ID: 6721185
Filing Date: 2004-04-13
Classification: G11C,H01L,H05K

Abstract:
A memory module for memory expansion in a computer system, said memory module comprising:a printed circuit board having a first side and a second side, wherein said printed circuit board includes a connector edge adapted for insertion within a socket of said computer system, the connector edge having a plurality of contact pads on said first side and said second side of said printed circuit and a plurality of memory chips mounted on said printed circuit board; wherein said plurality of contact pads includes power contact pads configured to convey power, ground contact pads configured to convey ground and data signal contact pads configured to convey data bits for storage within said plurality of memory chips; wherein said power and ground contact pads alternate along each side of said connector edge, wherein at least one of said ground contact pads is between every two of said power contact pads to form adjacent power and ground contact pad pairs; and wherein all of said data signal contact pads are arranged between given adjacent power and ground contact pad pairs such that exactly four of said data signal contact pads are arranged between any of said given adjacent power and ground contact pad pairs.