Patent ID: 8155663

Claim:
A module for use in a portable communications device comprising: (a) chips including an ASIC, a plurality of memory chips and an additional chip, the chips being superposed in a stack and electrically interconnected with one another, (b) an interposer having top and bottom sides disposed within the stack between two of said chips, the interposer having upper terminals exposed at the top side and lower terminals exposed at the bottom side, at least some of upper terminals being electrically connected to at least some of the lower terminals, the interconnections between at least two of the chips extending through the interposer, (c) a bottom unit substrate having a top side facing upwardly toward the interposer, a bottom side facing downwardly away from the interposer, top side interconnection terminals exposed at the top side of the bottom unit substrate, and bottom side terminals exposed at the bottom side of the bottom unit substrate, the bottom side terminals including bottom side chip connection terminals and module mounting terminals, one of the chips being mounted to the top side of the bottom unit substrate, another one of the chips being mounted to the bottom side of the bottom unit substrate and connected to the bottom side chip connection terminals of the bottom unit substrate, at least some of the top side terminals being connected to the interposer, the module mounting terminals being unoccupied by the connection to the lowermost one of the chips.