发明申请
- 专利标题: AT-SPEED SCAN TESTING OF MEMORY ARRAYS
- 专利标题(中): 记忆阵列的速度扫描测试
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申请号: US12495158申请日: 2009-06-30
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公开(公告)号: US20100332924A1公开(公告)日: 2010-12-30
- 发明人: Thomas A. Ziaja , Murali Gala , Paul J. Dickinson , Karl P. Dahlgren , David L. Curwen , Oliver Caty , Steven C. Krow-Lucal , James C. Hunt , Poh-Joo Tan
- 申请人: Thomas A. Ziaja , Murali Gala , Paul J. Dickinson , Karl P. Dahlgren , David L. Curwen , Oliver Caty , Steven C. Krow-Lucal , James C. Hunt , Poh-Joo Tan
- 主分类号: G11C29/04
- IPC分类号: G11C29/04 ; G06F11/22
摘要:
An integrated circuit configured for at-speed scan testing of memory arrays. The integrated circuit includes a scan chain having a plurality of serially coupled scan elements, wherein a subset of the plurality of scan elements are coupled to provide signals to a memory array. Each scan element of the subset of the plurality of scan elements includes a flip flop having a data input, and a data output coupled to a corresponding input of the memory array, and selection circuitry configured to, in an operational mode, couple a data path to the data input, and further configured to, in a scan mode, couple to the data input one of a scan input, the data output, and a complement of the data output. The scan elements of the subset support at-speed testing of a memory array coupled thereto.
公开/授权文献
- US08065572B2 At-speed scan testing of memory arrays 公开/授权日:2011-11-22
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