Patent attributes
A memory card containing a resin sealed stacking of plural semiconductor chips which are rear surface mounted over a main surface of a base substrate, the rear surface of the substrate being provided with external connection terminals. The relatively lower ones of the stacked semiconductor chips include a memory circuit and may be larger in size than the uppermost chip which contains a control circuit. Resin sealed wiring connections between bonding pads on the main surface of the respective chips and corresponding ones of electrodes on the main surface of the substrate are arranged so as to avoid crossovers between them, with respect to a plan view thereof. A resin cap may be used to cover the main surface side of the base substrate, which has the resin sealed semiconductor chips mounted thereon.