Integrated circuit wearout detection
First Claim
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1. A method of detecting wearout of an integrated circuit having at least one functional circuit, said method comprising:
- detecting signal generation latency of at least one signal within a functional circuit; and
in response to said signal generation latency, triggering a wearout response.
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Abstract
An integrated circuit is provided with latency detecting circuitry for detecting signal generation latency within one or more functional circuits and in response thereto to generate a wearout response. The wearout response can take a variety of different forms such as reducing the operating frequency, increasing the operating voltage, operating task allocation within a multiprocessor system, manufacturing test binning and other wearout responses.
52 Citations
29 Claims
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1. A method of detecting wearout of an integrated circuit having at least one functional circuit, said method comprising:
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detecting signal generation latency of at least one signal within a functional circuit; and in response to said signal generation latency, triggering a wearout response. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An integrated circuit comprising:
at least one functional circuit; latency detecting circuitry responsive to at least one signal within a functional circuit to detect signal generation latency; and wearout response triggering circuitry coupled to latency detecting circuitry and responsive to said signal generation latency to trigger a wearout response. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. An integrated circuit comprising:
at least one functional circuit means; latency detecting means for detecting signal generation latency in at least one signal within a functional circuit; and wearout response triggering means coupled to said latency detecting circuitry for trigger a wearout response in response to said signal generation latency.
Specification