| 摘要 |
PURPOSE:To remove noise disturbance due to a peak currrent during the operation of a word line selecting circuit and stabilize the operation by dividing word lines by memory cell arrays and putting them delay operation. CONSTITUTION:Memory cell arrays 11 and 12 are equipped with a bit line sense amplifier circuit 13 including memory cells CS and a word line selecting circuit 14. Activation signals phiW of the circuit 14 are diving by blocks of the arrays 11 and 12; the selecting circuit 14 of the array 11 is put in operation and then the selecting circuit 14 of the array 12 is operated after the dalay time of a circuit 14. Consequently, memory currents are two small peak current (a) and (b) during activation and two small peak currents (c) and (d) during precharging operation. |
