Patent ID: 7557436

Claim:
A semiconductor device comprising: a first area disposed over a semiconductor substrate and divided into a plurality of second areas; first elements disposed in the second areas, formed in the semiconductor substrate and configured to store information; second elements disposed in the second areas, formed in the semiconductor substrate; a signal line formed in the first area and formed over the first and second elements; and wiring lines for supply voltage contributing to the actuation of the first and second elements, the wiring lines for supply voltage being disposed respectively in the plural second areas in a layer which overlies the signal line, wherein said wiring lines are formed so as to be different in shape from one another, wherein each of the wiring lines for supply voltage is electrically connected to a detector circuit, which is configured to be used for detection of tampering with the wiring lines for supply voltage and which is comprised of the second elements, wherein planar positional relationships between the wiring lines for the supply voltage and the detector circuits electrically connected thereto are arranged so as to be irregular, and wherein the first and second elements are MISFETs, respectively.