SEMICONDUCTOR MEMORY DEVICE

摘要

PURPOSE: A semiconductor memory device is provided to stably operate a power drive by meshing a power line within a memory array. CONSTITUTION: A semiconductor memory device includes a sense amplifier(S/A), four power lines, a memory array mat, a subword driver(SWD), 16 word line driving control lines and 32 word lines(MWL). The 4 power lines are arranged in a vertical direction of the sense amplifier. The 16 word line driving control lines are arranged in a vertical direction of the memory array mat and the subword driver. The 32 word lines are arranged in a vertical direction of the memory array mat and the subword driver. 2 power lines(VDDCLP,VSSA) are additionaly arranged in the vertical direction of the sense amplifier. Power lines vertically crossing on the subword drivers and the sense amplifier are contacted each other.