SEMICONDUCTOR INTEGRATED CIRCUIT AND POWER SUPPLY CONTROL METHOD THEREFOR

WIPO Patent Application WO/2014/184985

A1

A semiconductor integrated circuit (100) equipped with: multiple processing circuits (11, 12, 13) containing notification units that output a notification signal in accordance with the processing state of the processing circuit; multiple power supply switch units (SW1, SW2, SW3) that change the state of the connection between the respective processing circuit and a power supply; a power supply switch control circuit (10) that is connected to each notification unit (111, 121, 131), stores power supply control information (101), including multiple connection states, and controls the connection states on the basis of the notification signals and the power supply control information; and a data bus (BS) and the like connecting each processing circuit and the power supply switch control circuit. Two or more of the multiple processing circuits update the power supply control information via the data bus or the like before outputting a notification signal. The power supply switch control circuit receives the notification signal that has been output by any of the multiple processing circuits after the update, and controls the connection state of each of the multiple power supply switch units on the basis of the updated power supply control information.

TSUJI YUKIHIDE (JP)
SAKIMURA NOBORU (JP)
NEBASHI RYUSUKE (JP)
TADA AYUKA (JP)

PCT/JP2014/000019

November 20, 2014

January 07, 2014

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NEC CORP (JP)

G06F1/32; G06F1/26

JP2008181329A	2008-08-07
JP2002244761A	2002-08-30
JP2001022480A	2001-01-26

IEIRI, Takeshi (JP)
House ON 健 (JP)

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