Semiconductor memory device and semiconductor integrated circuit device

A semiconductor integrated circuit device, comprising a memory module which includes:

• memory mats obtained by dividing a memory array into at least two portions;
• a first peripheral circuit which is provided for each of said respective memory mats, controls said memory mats, and performs a data transfer with said memory mat;
• a second peripheral circuit for performing overall control of each of said peripheral circuits;
• a first power control section for controlling a power supply in a non-selected first peripheral circuit when one of the memory mats divided into at least two portions is selected and operated;
• and
• a second power control section for controlling a power supply in said first power control section and said second peripheral circuit when either of said memory mats divided into at least two portions is not selected.

A semiconductor integrated circuit device composed of a plurality of circuit modules, comprising:

• a first circuit block having a first circuit module;
• a second circuit block having a second circuit module;
• a third circuit block having a third circuit module;
• a first power control section for controlling a power supply in said first circuit block by a first control signal from a central processing unit in said second circuit block;
• and
• a second power control section for controlling a power supply in said first power control section and said second circuit block by a second control signal from said central processing unit.