Semiconductor device

A semiconductor device comprising:

• a plurality of memory cells;
• a memory controller for controlling the plurality of memory cells;
• a charge pump;
• and
• a sense amplifier provided for each of the plurality of memory cells, wherein the sense amplifier performs a determination process of whether or not a write operation to the memory cell is completed,
• wherein, during a normal writing mode, the memory controller simultaneously performs, to a first number of memory cells of the plurality of memory cells, first write operations based on a first write current, and
• wherein, during a high-speed writing mode, the memory controller:
• simultaneously performs, to a second number of memory cells being larger than the first number of memory cells, first high-speed write operations based on a second write current, wherein a current value of the second write current is smaller than a current value of the first write current;
• and
• when the first high-speed write operations are completed, simultaneously performs, to one or more memory cells of the plurality of memory cells to which the first write operations based on the second write current have not been completed according to determination results of the sense amplifier, second write operations based on a third write current, wherein a current value of the third write current is larger than the current value of the second write current.