Patent ID: 8345441

Claim:
A microelectronic assembly, comprising: first and second microelectronic packages, each of the first and second microelectronic packages including: a substrate having first and second opposed surfaces and first and second apertures extending between the first and second surfaces, the apertures having first and second parallel axes extending in directions of the lengths of the respective apertures, the second surface having a central region disposed between the first and second axes; first and second microelectronic elements each having a surface facing the first surface of the substrate and a plurality of contacts at the surface of the respective microelectronic element aligned with at least one of the apertures, each microelectronic element embodying a greater number of active devices to provide memory storage array function than any other function; a plurality of terminals exposed at the second surface in the central region thereof, the terminals configured for connecting the microelectronic package to at least one component external to the microelectronic package; and leads electrically connected between the contacts of each microelectronic element and the terminals, each lead having a portion aligned with at least one of the apertures, wherein the terminals are configured to carry all of the address signals transferred to the microelectronic package; and a circuit panel having first and second opposed surfaces and panel contacts exposed at each of the first and second opposed surfaces, wherein at least some of the terminals of the first and second microelectronic packages are mounted to the panel contacts of the respective first and second surfaces and are electrically connected therethrough.