Patent ID: 8289764

Claim:
A semiconductor device comprising: first and second global word lines extending toward a first direction; a plurality of global bit lines extending toward a second direction orthogonal to the first direction and including a first global bit line; first and second memory tiles respectively provided at points of intersection of the first global bit lines and the first and second global word lines; a first word-line driving circuit controlled by the first global word line; and a second word-line driving circuit controlled by the second global word line, wherein the first and second memory tiles each includes: a plurality of word lines including first and second word lines; a plurality of bit lines; a bit-line selection circuit controlling connection between the plurality of bit lines and the first global bit line; and a plurality of memory cells respectively disposed at points of intersection between the plurality of word lines and the plurality of bit lines and including a diode for selection and a variable resistance element for storing information, wherein the first word lines included in the first and second memory tiles are commonly connected to the first word-line driving circuit, the second word lines included in the first and second memory tiles are commonly connected to the second word-line driving circuit, and when the first word-line driving circuit is activated in accordance with a rewrite operation, an output from the first word-line driving circuit is connected to only the first global bit line via any one of memory cells connected to the first word lines included the first and second memory tiles and the bit-line selection circuit and, when the second word-line driving circuit is activated in accordance with a rewrite operation, an output from the second word-line driving circuit is connected to only the first global bit line via any one of memory cells connected to the second word lines included the first and second memory tiles and the bit-line selection circuit.