Invention Grant
- Patent Title: Integrated circuit memory with built-in self-test (BIST)
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Application No.: US17027983Application Date: 2020-09-22
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Publication No.: US11264115B2Publication Date: 2022-03-01
- Inventor: Russell Schreiber , Keith A. Kasprak , Vance Threatt , James A. Wingfield , William A. Halliday , Srinivas R. Sathu , Arijit Banerjee
- Applicant: Advanced Micro Devices, Inc.
- Applicant Address: US CA Santa Clara
- Assignee: Advanced Micro Devices, Inc.
- Current Assignee: Advanced Micro Devices, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Polansky & Associates, P.L.L.C.
- Agent Paul J. Polansky
- Main IPC: G11C29/44
- IPC: G11C29/44 ; G11C29/12 ; G11C7/12 ; G06F12/0811

Abstract:
An integrated circuit includes a memory core and a built-in self-test (BIST) controller. The memory core has an array of memory cells located at intersections of a plurality of word lines and a plurality of bit line pairs. The BIST controller is coupled to the memory core and has a mission mode and a built-in self-test mode. When in the mission mode, the BIST controller performs read and write accesses using precharge on demand. When in the built-in self-test mode, the BIST controller performs a floating bit line test by draining a voltage on true and complement bit lines of a selected bit line pair and subsequently precharging the true and complement bit lines of the selected bit line pair, before reading or writing data using the true and complement bit lines of the selected bit line pair.
Public/Granted literature
- US20210407617A1 INTEGRATED CIRCUIT MEMORY WITH BUILT-IN SELF-TEST (BIST) Public/Granted day:2021-12-30
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