| 摘要 |
PROBLEM TO BE SOLVED: To provide an LSI having a power cut-off circuit cell, capable of controlling the turning off and on of a power supply to some layout blocks among a plurality of layout blocks according to a need, thus suppressing the deterioration in efficiency of wiring and an increase in an power supply area and in a chip size. SOLUTION: A semiconductor integrated circuit includes a plurality of layout blocks 11 and 12 in a chip, a power cut-off analog switch 13 which cuts off a power supply supplying power to some layout blocks among the plurality of layout blocks when necessary, and a circuit cut-off isolation cell 14 interposed between an output node of a power cut-off block 12 to be cut off power supply and a constantly powered block 11 not cut off power supply. The semiconductor integrated circuit is provided with a power cut-off circuit cell 20 having the power cut-off analog switch and the circuit cut-off isolation cell incorporated therein. COPYRIGHT: (C)2011,JPO&INPIT
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