Invention Grant
US07870451B2 Automatable scan partitioning for low power using external control
有权
使用外部控制的低功耗的自动扫描分区
- Patent Title: Automatable scan partitioning for low power using external control
- Patent Title (中): 使用外部控制的低功耗的自动扫描分区
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Application No.: US12512207Application Date: 2009-07-30
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Publication No.: US07870451B2Publication Date: 2011-01-11
- Inventor: Jayashree Saxena , Lee D. Whetsel
- Applicant: Jayashree Saxena , Lee D. Whetsel
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Lawrence J. Bassuk; W. James Brady; Frederick J. Telecky, Jr.
- Main IPC: G01R31/28
- IPC: G01R31/28

Abstract:
Scan architectures are commonly used to test digital circuitry in integrated circuits. The present invention describes a method of adapting conventional scan architectures into a low power scan architecture. The low power scan architecture maintains the test time of conventional scan architectures, while requiring significantly less operational power than conventional scan architectures. The low power scan architecture is advantageous to IC/die manufacturers since it allows a larger number of circuits (such as DSP or CPU core circuits) embedded in an IC/die to be tested in parallel without consuming too much power within the IC/die. Since the low power scan architecture reduces test power consumption, it is possible to simultaneously test more die on a wafer than previously possible using conventional scan architectures. This allows wafer test times to be reduced which reduces the manufacturing cost of each die on the wafer.
Public/Granted literature
- US20100023823A1 AUTOMATABLE SCAN PARTITIONING FOR LOW POWER USING EXTERNAL CONTROL Public/Granted day:2010-01-28
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