System comprising a state-monitoring memory element
Granted 22 Nov 2011 · 10 office actions
Current assignee: Morgan Stanley Senior Funding, Inc. · originally Infineon Technologies AG
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Inventors: Timothy Williams, Michael Sheets · Examiner: R Lance Reidlinger
Life of the patent
20 dated eventsAbstract
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.
Claims
16 · 3 independent · depth 3Classifications
4 codes- G11C5/14
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2 priority documents›Priority documents — 2
| Type | Document | Date |
|---|---|---|
| provisional | US 60912399 | 17 Apr 2007 |
| related publication | US 20080259702 A1 | 23 Oct 2008 |
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