Patent ID: 7327622

Claim:
A semiconductor device, comprising: a first bit line; a second bit line disposed to be next to said first bit line; and a first reference cell, including: a first transistor having a source and a drain, one of said source and said drain being coupled to said first bit line; a second transistor having a source and a drain, one of said source and said drain being coupled to said second bit line, and the other being coupled to the other of said source and said drain of said first transistor, which is not coupled to said first bit line; a first capacitance having electrodes, one of said electrode being coupled to said other of said source and said drain of said first transistor, which is not coupled to said first bit line, and also being coupled to said other of said source and said drain of said second transistor, which is not coupled to second first bit line; and a first sense amplifier, wherein said first bit line is coupled to said first sense amplifier, and said second bit line is electrically coupled to a constant-voltage source.