Invention Grant
- Patent Title: Testing embedded memories in an integrated circuit
- Patent Title (中): 在集成电路中测试嵌入式存储器
-
Application No.: US12941404Application Date: 2010-11-08
-
Publication No.: US08209572B2Publication Date: 2012-06-26
- Inventor: Don E. Ross , Xiaogang Du , Wu-Tung Cheng , Joseph C. Rayhawk
- Applicant: Don E. Ross , Xiaogang Du , Wu-Tung Cheng , Joseph C. Rayhawk
- Applicant Address: US OR Wilsonville
- Assignee: Mentor Graphics Corporation
- Current Assignee: Mentor Graphics Corporation
- Current Assignee Address: US OR Wilsonville
- Agency: Klarquist Sparkman, LLP
- Main IPC: G06F17/50
- IPC: G06F17/50 ; G11C29/00 ; G01R31/28

Abstract:
Various new and non-obvious apparatus and methods for testing embedded memories in an integrated circuit are disclosed. One of the disclosed embodiments is an apparatus for testing an embedded memory in an integrated circuit. This exemplary embodiment comprises input logic that includes one or more memory-input paths coupled to respective memory inputs of the embedded memory, a memory built-in self-test (MBIST) controller, and at least one scan cell coupled between the input logic and the MBIST controller. The scan cell of this embodiment is selectively operable in a memory-test mode and a system mode. In memory-test mode, the scan cell can apply memory-test data to the memory inputs along the memory-input paths of the integrated circuit. Any of the disclosed apparatus can be designed, simulated, and/or verified (and any of the disclosed methods can be performed) in a computer-executed application, such as an electronic-design-automation (“EDA”) software tool.
Public/Granted literature
- US20110145774A1 TESTING EMBEDDED MEMORIES IN AN INTEGRATED CIRCUIT Public/Granted day:2011-06-16
Information query