The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 20, 1999
Filed:
Apr. 11, 1997
Marcus E Landgraf, Folsom, CA (US);
Robert E Larsen, Shingle Springs, CA (US);
Mase J Taub, Elk Grove, CA (US);
Sanjay Talreja, Folsom, CA (US);
Vishram P Dalvi, Folsom, CA (US);
Edward M Babb, Rescue, CA (US);
Bharat M Pathak, Folsom, CA (US);
Christopher J Haid, Folsom, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A power supply lockout circuit that prevents corruption of nonvolatile writeable memory data is described. The power supply lockout circuit monitors the power supply signals from several power supplies. The power supply lockout circuit locks out commands writing to the nonvolatile writeable memory when any one of the monitored power supply signals coupled to the nonvolatile writeable memory is below a specified signal level. The power supply lockout circuit includes a detector which provides a lockout signal to the nonvolatile writeable memory when a power supply signal is less than a prespecified voltage. The power supply lockout circuit also includes a sampling circuit which provides other lockout signals to the nonvolatile writeable memory when a different power supply signal is less than a reference voltage.