| 摘要 |
PROBLEM TO BE SOLVED: To provide a semiconductor storage device which improves precharge speed of data IO lines and data amplifiers without increasing current consumption to increase speed in reading and writing data from and into memory. SOLUTION: The semiconductor storage device comprises a column decoder for generating a column selection signal to select any of a plurality of bit lines connected to the memory cells corresponding to inputted column address, a bit line selection switch for connecting any of a plurality of the bit line pairs with data IO line pairs to output the data read from the memory cell to the outside by the column selection signal, a data amplifier for amplifying a difference between the data IO line pairs to output the read data to an output buffer, a data IO switch provided for the data IO line, an IO precharge circuit for precharging the data IO line pair except for the data amplifier, and an amplifier precharge circuit for precharging the IO line pair of the data amp. COPYRIGHT: (C)2009,JPO&INPIT |
