Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system
Reexamination Certificate
2007-01-02
2007-01-02
Raymond, Edward (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Electrical signal parameter measurement system
C714S025000
Reexamination Certificate
active
10679724
ABSTRACT:
Electrical fuses (eFuses) are applied to the task of achieving very tightly controlled Input-Output (I/O) timing specifications. The I/O timing is made programmable and subject to adjustment as part of wafer probe testing. The techniques of parametric adjustment presented are based upon what is commonly referred to as clock skewing or clock tuning. The invention describes methods to select the clock skewing on a die-to-die basis based on functional testing with the actual parametric limits imposed on parameters of interest. The results associated with each die form the basis for hard-programming the selected clock skew value into the die via electrical fuses.
REFERENCES:
patent: 2002/0004926 (2002-01-01), Erickson
Beck Todd
Damodaran Raguram
Krishnan Manjeri
Brady W. James
Marshall, Jr. Robert D.
Raymond Edward
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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