Invention Grant
- Patent Title: Adapting scan architectures for low power operation
- Patent Title (中): 适应低功耗操作的扫描体系结构
-
Application No.: US12350685Application Date: 2009-01-08
-
Publication No.: US07644330B2Publication Date: 2010-01-05
- Inventor: Lee D. Whetsel
- Applicant: 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
- US20090119562A1 ADAPTING SCAN ARCHITECTURES FOR LOW POWER OPERATION Public/Granted day:2009-05-07
Information query