Invention Grant
- Patent Title: Address windowing for at-speed bitmapping with memory built-in self-test
- Patent Title (中): 地址窗口用于内存自检的内存高速位图
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Application No.: US13903434Application Date: 2013-05-28
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Publication No.: US09171645B2Publication Date: 2015-10-27
- Inventor: Geovanny Rodriguez , Brian J. Vincent , Timothy J. Vonreyn
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Hopewell Junction
- Assignee: GLOBALFOUNDRIES U.S. 2 LLC
- Current Assignee: GLOBALFOUNDRIES U.S. 2 LLC
- Current Assignee Address: US NY Hopewell Junction
- Agency: Roberts Mlotkowski Safran & Cole, P.C.
- Agent Andrew M. Calderson
- Main IPC: G01R31/28
- IPC: G01R31/28 ; G11C29/44 ; G11C29/30

Abstract:
Integrated circuits with memory built-in self-test (BIST) logic and methods of testing using the same are disclosed. The method includes setting an address window for locating defects in a memory array. The method further includes comparing output data of the memory array to expected data to determine that a defect exists at location “M” in the memory array within the address window. The method further includes storing, in registers, the address M and a resultant bit fail vector associated with the location “M” of the defect found in the memory array. The method further includes resetting the registers to a null value and resetting the address window with a new minimum and maximum address pair, to compare the output data of the memory array to the expected data within the reset address window which excludes address M.
Public/Granted literature
- US20140359383A1 ADDRESS WINDOWING FOR AT-SPEED BITMAPPING WITH MEMORY BUILT-IN SELF-TEST Public/Granted day:2014-12-04
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