PURPOSE:To reduce the dropping of a readout voltage due to noise between adjacent pairs of bit lines, by providing a crossing part to receive almost the same amount of capacity coupling noise being received from the adjacent pair of bit lines by each bit line making the pair. CONSTITUTION:The bit line divided into sections (a-d), and a sense amplifier SA and the crossing part (cross point) CP1 are arranged between the sections (a) and (b). Also, between the sections (b) and (c), the cross point CP2 is arranged, and between section (c) and (d), an active restore circuit AR and the cross point CP3 are provided. In such a way, the capacitive coupling noise from the adjacent bit line can be cancelled.
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