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:
Oct. 17, 1989
Filed:
Nov. 25, 1987
Giovanni Campardo, Bergamo, IT;
David Novosel, New Wilmington, PA (US);
SGS Microelettronica S.p.A., Catania, IT;
Abstract
A power-on reset circuit for supplying a reset pulse when a supply voltage rises above a preset threshold includes a reference voltage generator connected between the supply voltage and ground for supplying a reference signal having a constant preset value when the supply voltage is greater than the preset threshold. A supply follower provides an input signal which follows the supply voltage with a preset reduction factor. A bistable comparator having a first input driven by the reference signal and a second input driven by the input signal switches from a first state to a second state when the input signal exceeds the reference signal.