Patent ID: 8759982

Claim:
A microelectronic package, comprising: a substrate having first and second oppositely facing surfaces and a plurality of terminals exposed at the first surface, the terminals being configured for connecting the microelectronic package to at least one component external to the package; first and second microelectronic elements each having a face facing the second surface of the substrate; connections electrically coupling the terminals of the package with the first and second microelectronic elements, the connections including groups of connections for carrying respective signals, each group including a first connection extending from a respective terminal of the package to a corresponding contact on the first microelectronic element and a second connection extending from the respective terminal to a corresponding contact on the second microelectronic element, the first and second connections being configured such that a respective signal carried by the first and second connections in each group is subject to propagation delay of the same duration between the respective terminal and each of the corresponding contacts coupled thereto, wherein the substrate has edges bounding the first surface, the first surface having a central region occupying a central portion thereof, and a second region occupying a portion of the first surface between the central portion and at least one of the edges, the terminals including first terminals exposed at the central region and second terminals exposed at the second region, wherein the groups of connections couple the first terminals with the corresponding contacts for carrying signals comprising at least one of: address signals, clock signals usable for sampling the address signals, column address strobe, row address strobe or write enable, wherein the microelectronic package includes further connections electrically coupling the second terminals with contacts of the microelectronic elements.