SEMICONDUCTOR INTEGRATED CIRCUIT AND ITS POWER SUPPLY CONTROL METHOD

Title:

SEMICONDUCTOR INTEGRATED CIRCUIT AND ITS POWER SUPPLY CONTROL METHOD

Document Type and Number:

Japanese Patent JP2008181329

Kind Code:

A

Abstract:

To provide a semiconductor integrated circuit and its power supply control method for reducing consumed power of a CPU domain in an operation mode.

An interruption power source control unit 5 monitors interruptions 11, 21, 31 from function blocks 1, 2, 3 and a power control command 41 from a CPU 4. When an interruption or a command is made, the control unit 5 performs power control in accordance with content of an interruption power control table 50. The control performs ON/OFF control of power switches 12, 22, 32, 42, and performs outputs of control signals 581, 582 to power source interruption countermeasure elements 81, 82. When the control supplies power to necessary blocks, the control unit 5 starts up the corresponding blocks in accordance with the table 50.

More Like This:

WO/2003/036450	DRAM POWER MANAGEMENT
JPH1139769	INFORMATION PROCESSOR AND POWER SAVING DEVICE
WO/2019/117623	METHOD AND APPARATUS FOR OPERATING A PROCESSOR IN AN ELECTRONIC DEVICE

Inventors:

KOIZUMI SHINYA

Application Number:

JP2007014138A

Publication Date:

August 07, 2008

Filing Date:

January 24, 2007

Export Citation:

Click for automatic bibliography generation Help

Assignee:

MATSUSHITA ELECTRIC IND CO LTD

International Classes:

G06F1/32; H01L21/822; H01L27/04; H03K19/00

Domestic Patent References:

JPH07141074A	1995-06-02
JP2006107127A	2006-04-20
JP2004021574A	2004-01-22
JPH07287699A	1995-10-31
JPH09160684A	1997-06-20
JP2004140503A	2004-05-13

Attorney, Agent or Firm:

Shohei Oguri
Toshimitsu Ichikawa
Kimihide Hashimoto

Previous Patent: OPERATION SUPPORT DEVICE FOR VEHICLE

Next Patent: IMAGE PROCESSOR AND IMAGE PROCESSING METHOD