Systems and methods for sensing a memory element

Details Systems and methods for sensing a memory element Systems and methods for sensing a memory element

2005-05-24

2005-05-24

Elms, Richard (Department: 2824)

Static information storage and retrieval

Read/write circuit

Testing

C365S205000, C365S189070

Reexamination Certificate

active

06898134

ABSTRACT:
Methods, systems, and programs for recalibrating a sense amplifier. A representative method includes: measuring a physical property of a memory cell to produce a first measurement; comparing the first measurement to a first range, the first range being indicative of a short or open circuit in the memory cell; halting the sense of the selected memory cell if the first measurement exceeds the first range; comparing the first measurement to a second range, the second range being a predetermined range signifying a recalibration of the sense amplifier may be necessary; proceeding with the sense if the first measurement is within the first range and the second range; repeating the steps of measuring and comparing for a predetermined number of iterations, if after each iteration, the measurement exceeds the second range but is within the first range; and recalibrating the sense amplifier, if after the predetermined number of iterations, the measurement still exceeds the second range but is within the first range.

REFERENCES:
patent: 6504779 (2003-01-01), Perner
patent: 6788594 (2004-09-01), Ware et al.

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