Semiconductor integrated circuit and various devices comprising the semiconductor integrated circuit

A semiconductor integrated circuit according to the present invention comprising:

• a first circuit block connected to a power supply wire or a ground wire;
• a second circuit block connected to the power supply wire or the ground wire to which the first circuit block is connected;
• an operation control circuit for temporarily stopping a function of the second circuit block when the first circuit block shifts from a power supply shutdown state to a power supply feeding state or shifts from the power supply feeding state to the power supply shutdown state and then recovering the function of the second circuit block;
• a first power supply shutdown switch for disconnecting the first circuit block from the power supply wire or the ground wire when the first circuit block is in a non-operating state;
• and
• a delay adjusting circuit for adjusting a length of time when the first circuit block is connected to or disconnected from the power supply wire or the ground wire using the first power supply shutdown switch.

A semiconductor integrated circuit according to the present invention comprising:

• a first circuit block connected to a ground wire;
• a second circuit block connected to the ground wire to which the first circuit block is connected;
• a first power supply for feeding power to the first circuit block;
• a second power supply for feeding power to the second circuit block;
• and
• an operation control circuit for temporarily stopping a function of the second circuit block when the first circuit block shifts from a power supply shutdown state to a power supply feeding state or shifts from the power supply feeding state to the power supply shutdown state and then recovering the function of the second circuit block, wherein
• the first and second power supplies independently feed different power supply potentials to power supply destinations thereof.