公开(公告)号：US09032354B2

公开(公告)日：2015-05-12

申请号：US13903847

申请日：2013-05-28

Applicant: STMicroelectronics, Inc.

Inventor： Razak Hossain

IPC: G06F17/50 ,  G01R31/3177 ,  G01R31/3185

CPC classification number: G01R31/3177 ,  G01R31/318575 ,  G01R31/318577

Abstract: A leakage power control vector is loaded into existing test scan chain elements for application to circuit elements of a circuit in which the leakage currents are to be controlled. The vector is designed to configure the circuit elements into states in which leakage currents are reduced. A multiplexer selects the power control vector for loading into the scan chain elements, and a clock generator clocks the configuration vector into the scan chain elements. A sleep mode detector may be provided to configure the multiplexer to select the power control vector and to operate the clock generator to clock the power control vector into the scan chain elements when a sleep mode of the circuit is detected.

公开(公告)号：US20130262944A1

公开(公告)日：2013-10-03

申请号：US13903847

申请日：2013-05-28

Applicant: STMicroelectronics, Inc.

Inventor： Razak Hossain

IPC: G01R31/3177

CPC classification number: G01R31/3177 ,  G01R31/318575 ,  G01R31/318577

Abstract: A leakage power control vector is loaded into existing test scan chain elements for application to circuit elements of a circuit in which the leakage currents are to be controlled. The vector is designed to configure the circuit elements into states in which leakage currents are reduced. A multiplexer selects the power control vector for loading into the scan chain elements, and a clock generator clocks the configuration vector into the scan chain elements. A sleep mode detector may be provided to configure the multiplexer to select the power control vector and to operate the clock generator to clock the power control vector into the scan chain elements when a sleep mode of the circuit is detected.

Abstract translation: 泄漏功率控制矢量被加载到现有的测试扫描链元件中，用于应用于要控制泄漏电流的电路的电路元件。 该矢量被设计为将电路元件配置为泄漏电流减小的状态。 多路复用器选择用于加载到扫描链元件中的功率控制矢量，并且时钟发生器将配置向量计时到扫描链元件中。 可以提供睡眠模式检测器来配置多路复用器以选择功率控制矢量，并且当检测到电路的睡眠模式时，操作时钟发生器以将功率控制矢量时钟化为扫描链元件。