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:
Nov. 23, 1999
Filed:
Oct. 24, 1997
Robin J Jigour, San Jose, CA (US);
Asim A Bajwa, San Jose, CA (US);
Other;
Abstract
A memory device (100) includes a user device information sector (122) in addition to normal sectors (124) of a memory array. The user device information sector includes a product identification field (240) and a restricted address list field (250), and optionally includes a customer identification number field (220) and a serial number field (230). The product identification field includes such information as the manufacturer ID, a part number ID, package/speed identification, temperature/voltage identification, and byte locations for special options. The device identification field is factory programmed using a high voltage enabling signal applied to a write control logic circuit (102) in the memory device in conjunction with a 'Device Information Sector Program' instruction is applied to the SPI command and control logic (110). The device information sector is read from the application using a 'Read Device Information' instruction. Inadvertent corruption of the device information sector is avoided since a high voltage typically is not available in the application, and the 'Device Information Sector Program' instruction is not in the application command set.