Semiconductor device

A semiconductor device comprising:

• first and second memory banks including a plurality of sense amplifiers and adapted to be activated by first and second commands, respectively;
• a power supply line adapted to supply a predetermined voltage to the plurality of sense amplifiers of said first and second memory banks and arranged in a mesh manner above the first and second memory banks;
• and
• first and second power supply circuits having respective output nodes connected to said power supply line, said first and said second power supply circuits being adapted to generate said predetermined voltage;
• wherein said first power supply circuit are adapted to start generating said predetermined voltage in response to said first command;
• and
• wherein, when said second command is inputted while said first memory bank is active, said first power supply circuit is adapted to stop generating said predetermined voltage in response to said second command and said second power supply circuit is adapted to start generating said predetermined voltage in response to said second command.