Inter-stacking module system

An inter-stacking module system comprising:

• a first substrate, the first substrate having a first bond pad;
• a first integrated circuit mounted directly on the first substrate;
• a second integrated circuit mounted directly on a surface of the first integrated circuit;
• an integrated circuit spacer mounted directly on the surface of the first integrated circuit and spaced apart from the second integrated circuit;
• an inter-stacking module substrate mounted with a center thereof over and between the integrated circuit spacer and the second integrated circuit includes a direct electrical connection between a module integrated circuit, mounted on the inter-stacking module substrate, and inter-stacking module bonding pads exposed from an outer peripheral vertical side of the inter-stacking module substrate and exposed from a module substrate bottom, with a solder mask isolated from a region between all of the inter-stacking module bonding pads on the outer peripheral vertical side;
• bond wires directly connected between the inter-stacking module bonding pad-pads and the first bond pad;
• further comprising instances of the inter-stacking module bonding pads aligned in a row on the inter-stacking module substrate;
• instances of the first bond pad aligned in a row on the first substrate and parallel to the row of instances of the inter-stacking module bond pads;
• further comprising a package in package device comprising:
• an integrated circuit mounted directly on a module substrate to of the inter-stacking module substrate and connected to the inter-stacking module bond pads with the bond wires;
• a molding compound encases the integrated circuit, the bond wires and the module substrate to of the inter-stacking module substrate;
• and
• a stacking module spacer adhered to the molding compound and mounted over the integrated circuit on the first substrate.