Invention Grant
- Patent Title: Progressive random access scan circuitry
- Patent Title (中): 逐行随机存取扫描电路
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Application No.: US11526379Application Date: 2006-09-25
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Publication No.: US07665001B2Publication Date: 2010-02-16
- Inventor: Dong Hyun Baik , Kewal K. Saluja
- Applicant: Dong Hyun Baik , Kewal K. Saluja
- Applicant Address: US WI Madison
- Assignee: Wisconsin Alumni Research Foundation
- Current Assignee: Wisconsin Alumni Research Foundation
- Current Assignee Address: US WI Madison
- Agency: Brinks Hofer Gilson & Lione
- Main IPC: G01R31/28
- IPC: G01R31/28

Abstract:
A scan cell is described for testing an integrated circuit. The scan cell may include circuitry adapted to operate in a non-test mode as a storage element and adapted to operate as a static random access memory (SRAM) cell in a test mode. For example, the circuitry may include one or more pass transistors and a flip flop. The scan cell may be one of a plurality of addressable scan cells in one or more grids for testing the integrated circuit. For example, the scan cells may be arranged in a single grid or may be partitioned into two or more grids. The scan cell may be used for reliability testing or for performance testing. The PRAS cell for performance testing may be staged, with a first pattern applied and then a second pattern applied. For example, one section of the scan cell may operate using a clock cycle of Φ1 and another section of the PRAS cell may operate using a clock cycle of Φ2 which is different from Φ1.
Public/Granted literature
- US20080091995A1 Progressive random access scan circuitry Public/Granted day:2008-04-17
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