U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Method and apparatus thereof for burn-in testing of a static random access memory

Patent 6414889 Issued on July 2, 2002. Estimated Expiration Date: Icon_subject July 3, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Memory cell having a super supply voltage
Patent #: 5379260
Issued on: 01/03/1995
Inventor: McClure

Semiconductor device incorporating voltage reduction circuit therein Patent #: 5463585
Issued on: 10/31/1995
Inventor: Sanada

Inventors

Application

No. 681989 filed on 07/03/2001

US Classes:

365/201Testing

Examiners

Primary: Zarabian, A.

Attorney, Agent or Firm

International Class

G11C 007/00

Abstract

A apparatus uses a test method to perform burn-in testing of a static random access memory that has a plurality of word lines, a plurality of first bit lines, a plurality of second bit lines, and a plurality of memory cells for storing data. Each of the memory cells is coupled to a corresponding word line, a corresponding first bit line, a corresponding second bit line, and a power supply that is used to apply a working voltage to the memory cell to drive the memory cell. When the apparatus tests the static random access memory, the apparatus adjusts the working voltage according to a potential of the word lines and voltage gaps between the first bit lines and the second bit lines.

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