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:
Dec. 14, 1999
Filed:
Nov. 10, 1997
Julia Shau-Chang Chan, Saratoga, CA (US);
Chao-Hung Chang, Santa Clara, CA (US);
Paul Jei-Zen Song, Sunnyvale, CA (US);
Integrated Silicon Solution, Inc., Santa Clara, CA (US);
Abstract
A 5V generator circuit is disclosed that generates a reliable 5V signal for use in integrated circuits from the available VPP or VCC supplies for a wide range of VPP and VCC voltages. When VCC is greater than approximately 4V, the generator circuit generates the 5V signal directly from VCC. When VCC is less than approximately 4V and VPP is greater than approximately 4V but less than about 9V, the generator circuit generates the 5V signal directly from VPP. When VCC is less than approximately 4V and VPP is greater than approximately 9V, the generator produces the 5V signal at approximately half of the voltage level of the VPP signal. When both VCC and VPP are less than about 4V, the 5V signal is generated at the too-low VCC level.