| 摘要 |
A semiconductor integrated circuit includes: a floating point arithmetic unit that includes circuit resources over which power saving control is performed, and executes a floating point arithmetic operation; a power-control instruction control unit that receives a pre-access instruction corresponding to a floating point arithmetic operation instruction, and invalidates stepwise the power saving control over the circuit resources included in the floating point arithmetic unit to operate a part of the circuit resources in the floating point arithmetic unit; and a control unit that causes the floating point arithmetic unit to execute the floating point arithmetic operation, wherein before execution of the floating point arithmetic operation in the floating point arithmetic unit, power consumption is previously increased by the pre-access instruction. |
