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Patent Searching and Data


Title:
SEMICONDUCTOR DEVICE AND DATA PROCESSING SYSTEM
Document Type and Number:
Japanese Patent JP2013008282
Kind Code:
A
Abstract:

To provide a technology for reducing dependency on a CPU during power supply control and for reducing power consumption.

A semiconductor device (1) comprises a plurality of circuit modules (110, 120, 130, 140, 150) which are operated by feeding power from a single power supply line (170) to which an external power source (VDD) is supplied, and in which operation voltages are different from each other and a central processing unit (110) is included as one of circuit modules, a power supply control section (161) which controls supply and stop of power with respect to each of the circuit modules, and a power supply voltage instruction section (162) which monitors power supply states of the circuit modules and instructs, via an output terminal (VSEL), the supply of a highest operation voltage among operation voltages of circuit modules subjected to power supply by the power supply control section.


Inventors:
Fujigaya, Masaki
Chang, Hu-song
Application Number:
JP2011000141697
Publication Date:
January 10, 2013
Filing Date:
June 27, 2011
Export Citation:
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Assignee:
RENESAS ELECTRONICS CORP
International Classes:
G06F1/26; G06F1/32
Attorney, Agent or Firm:
玉村 静世