SEMICONDUCTOR MEMORY

PROBLEM TO BE SOLVED: To obtain a semiconductor memory which can perform stable sensing operations even when the data transmitting route is different or environmental condition varies by sending data to a sense amplifier circuit by transmitting enable signals through a signal line which is wired in the same form as that of a bit line. SOLUTION: Enable signals BSAEN and MSAEN are inputted to a bit-line sense amplifier circuit 139 by using a dummy bit line 144 which is not a metal passing line. An inverter 143 transmits its output through the dummy bit line 144 and inputs the enable signal BSAEN to a bit-line sense amplifier circuit 123. Inverters 145 and 147 input the enable signal MSAEN to a line sense circuit 139 by delaying the output signal of the inverter 143. Even when the transmitting timing of read-out data on the bit line 144 changes due to a process or environmental variation, the sensing margin of the sense amplifier becomes constant, because the enable signals also change identically.