A SATA connector including an insulative housing and a plurality of terminals are provided. The acceleration sensor also includes weight portions disposed above the XY substrate surface of the base in a floating state and connecting portions for attaching the weight portions to the beam portion in a cantilever state. Advantageously, the read signals of the various active bit lines cannot mutually influence one another. The first device ascertains a first value that reflects a difference between the first time and the second time.