Patent ID: 8386992

Claim:
A data processing device to be mounted on a printed circuit board on which a first memory device having a first inversion data strobe signal circuit terminal and a first non-inversion data strobe signal circuit terminal is mounted, wherein the data processing device includes a package having an upper surface and a lower surface opposite to the upper surface, a microcomputer chip having a first inversion data strobe signal circuit and a first non-inversion data strobe signal circuit, and mounted on the upper surface of the package, and a plurality of ball electrodes formed on the lower surface of the package; a shape in a plan view of the package is comprised of a quadrangle having a first side; a shape in the plan view of the microcomputer chip is comprised of a quadrangle having a second side; the microcomputer chip is mounted on the upper surface of the package such that the second side of the microcomputer chip is arranged side by side with the first side of the package in the plan view; both the first inversion data strobe signal circuit and the first non-inversion data strobe signal circuit of the microcomputer chip are arranged along the second side of the microcomputer chip; the ball electrodes are arranged along the first side of the package and arranged in plural rows; a first non-inversion data strobe signal circuit ball electrode of the ball electrodes electrically connected with the first non-inversion data strobe signal circuit of the microcomputer chip via a first wiring line formed in the package, and electrically connected with the first non-inversion data strobe signal circuit terminal of the first memory device is arranged along a direction intersecting with the first side of the package in the plan view, and is arranged side by side with a first inversion data strobe signal circuit ball electrode of the ball electrodes electrically connected with the first inversion data strobe signal circuit of the microcomputer chip via a second wiring line formed in the package, and electrically connected with the first inversion data strobe signal circuit terminal of the first memory device; and the first inversion data strobe signal circuit ball electrode and the first non-inversion data strobe signal circuit ball electrode are disposed at first and second rows from the first side of the package, or third and fourth rows from the first side of the package, respectively.