Invention Grant
- Patent Title: System comprising a state-monitoring memory element
- Patent Title (中): 系统包括状态监视存储元件
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Application No.: US11857947Application Date: 2007-09-19
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Publication No.: US08111577B2Publication Date: 2012-02-07
- Inventor: Michael Sheets , Timothy Williams
- Applicant: Michael Sheets , Timothy Williams
- Applicant Address: US CA San Jose
- Assignee: Cypress Semiconductor Corporation
- Current Assignee: Cypress Semiconductor Corporation
- Current Assignee Address: US CA San Jose
- Main IPC: G11C5/14
- IPC: G11C5/14

Abstract:
Embodiments of the invention relate to a state-monitoring memory element. The state-monitoring memory element may have a reduced ability to retain a logic state than other regular memory elements on an IC. Thus, if the state-monitoring memory elements fails or loses state during testing, it may be a good indicator that the IC's state retention may be in jeopardy, possibly requiring the IC to be reset. The state-monitoring memory element may be implemented by degrading an input voltage supply to the state-monitoring memory element across a diode and/or a transistor. One or more current sources may be used to stress the state-monitoring memory element. A logic analyzer may be used to analyze the integrity of the state-monitoring memory element and trigger appropriate actions in the IC, e.g., reset, halt, remove power, interrupt, responsive to detecting a failure in the state-monitoring memory element. Multiple state-monitoring memory elements may be distributed in different locations on the IC for better coverage.
Public/Granted literature
- US08064281B2 System comprising a state-monitoring memory element Public/Granted day:2011-11-22
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