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:
Sep. 13, 1994
Filed:
Oct. 22, 1992
Michael V Cordoba, Colorado Springs, CO (US);
Kim C Hardee, Colorado Springs, CO (US);
United Memories, Inc., Colorado Springs, CO (US);
Nippon Steel Semiconductor Corporation, Chiba, JP;
Abstract
A substrate bias generator avoids using a free-running oscillator and thereby saves power in the standby mode. A clock enable signal from a regulator sets a latch in a self-timed clock circuit. The latch setting initiates a first group of clock signals (that are used by a pump circuit for pumping), at the end of which the latch is reset but concomitantly an input circuit to the latch is disabled from recognizing a new pump signal. Resetting the latch causes the clock circuit to generate a second group of clock signals used in the charge pump to prepare fully for the next demand for pumping. At the end of the second group of clock signals, a full cycle of clocks has been completed in a self-timed manner, and the input circuit to the latch is reenabled to recognize a subsequent pump signal.