Semiconductor integrated circuit device

A semiconductor integrated circuit device comprising:

• a plurality of word lines;
• a plurality of bit lines crossing the plurality of word lines;
• a plurality of memory cells disposed at predetermined crossings between the plurality of word lines and the plurality of bit lines;
• a plurality of sense amplifiers connected to the plurality of bit lines;
• and
• a plurality of write drivers connected to the plurality of sense amplifiers and each including a first write switch writing first information to corresponding memory cells and a second write switch writing second information to the corresponding memory cells,
• wherein the first write switches of write drivers which are connected to sense amplifiers holding the first information are activated after four data are inputted to a data input buffer, and
• wherein the second write switches of write drivers which are connected to sense amplifiers holding the second information are activated after activating the first write switches to write the first information before starting a pre-charge operation.