SEMICONDUCTOR MEMORY DEVICE HAVING SHARED SENSE AMPLIFIERS

摘要

PURPOSE: A semiconductor memory device is provided to reduce the number of signals outputted from a column decoder by selecting a plurality of bit lines in response to a bit line selection indication signal of a bit line selector. CONSTITUTION: A memory cell array(110) comprises a plurality of memory cells between a word line and a bit line. A column decoder(120) outputs a bit line selection indication signal in response to a column address. A bit line selector(130) selects, activates, and outputs the bit line selection signal in response to the bit line selection indication signal. One end of a switch is connected to a bit line. The other end is successively connected to a sensing line. A shared sense amplifier(140) comprises a sense amplifier sensing and amplifying data applied through the sensing line.