Patent ID: 7633155

Claim:
A semiconductor device comprising: a first substrate including a flat body having a first surface for mounting an electronic component and a second surface substantially parallel to the first surface, the first and second surfaces being disposed parallel to each other in the width direction of the substrate; wherein the first substrate includes, a first region on the flat body for mounting the electronic component, a second region on the flat body including a plurality of first communication units for transmitting and receiving signals to and from a second substrate, the plurality of first communication units being provided in a cluster, input-output circuits disposed on the first region or the second region, the input-output circuits corresponding to the first communication units, each of the input-output circuits including an output circuit for outputting a signal to a second communication unit of the second substrate corresponding to the first communication unit and an input unit for receiving a signal sent from the corresponding second communication unit; and a control circuit for controlling input to and output from the input-output circuits, the control circuit being disposed on the first region or the second region of the first substrate.