Semiconductor device and system

Details Semiconductor device and system Semiconductor device and system

2005-09-01

2009-02-03

Patel, Nitin C (Department: 2116)

Electrical computers and digital processing systems: support

Computer power control

C713S322000, C713S323000, C700S032000, C700S106000, C700S174000, C702S182000

Reexamination Certificate

active

07487370

ABSTRACT:
According to the present invention, there is provided a semiconductor device including a power supply circuit which receives an external power supply voltage supplied, and outputs an internal power supply voltage not higher than the external power supply voltage; a system module which receives the internal power supply voltage, and performs a predetermined operation; and a performance monitor circuit which measures a processing speed of said system module when the internal power supply voltage is applied, and, on the basis of the processing speed, outputs a first control signal which requests to set the external power supply voltage at a first level, and a second control signal which requests said power supply circuit to set the internal power supply voltage at a second level. The power supply circuit outputs the internal power supply voltage having the second level on the basis of the second control signal applied thereto.

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