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:
Mar. 26, 2002
Filed:
Jul. 25, 2000
Ryan T. Hirose, Colorado Springs, CO (US);
Loren T. Lancaster, Colorado Springs, CO (US);
Cypress Semiconductor Corporation, San Jose, CA (US);
Abstract
A bistable non-volatile latch circuit adapted to store a non-volatile binary data state during a program operation, and to assume one of two stable states in response to a recall operation that correspond uniquely to the data state has first and second circuit sections. The first circuit section has a first non-volatile current path with means to set the impedance of the first current path in a non-volatile manner. A first end of the first current path is connected to provide a logic output signal, which represents a binary logic state depending on a voltage applied to the a first signal input node. The set/reset signal to the first current path varies between at least the power source voltage and a program voltage that is negative with respect to the power source voltage. A second circuit section generates an output voltage on a second output node that represents a binary logic state opposite from the output states of the first circuit section. Means are provided for connecting the first circuit section and the second circuit section into a bistable configuration.