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. 25, 2001
Filed:
Dec. 18, 2000
Phil-Jung Kim, Kyoungki-do, KR;
Jae-Kyung Wee, Kyoungki-do, KR;
Chang-Hyuk Lee, Kyoungki-do, KR;
Jin-Keun Oh, Kyoungki-do, KR;
Jae-Seok Park, Kyoungki-do, KR;
Oh-Won Kwon, Kyoungki-do, KR;
Ho-Youb Cho, Kyoungki-do, KR;
Hyundai Electronics Industries Co., Ltd., Ichon-shi, KR;
Abstract
An antifuse circuit provides a stabilized high voltage to an antifuse programming circuit through the use of an NC pin which is not used in the chip operation. For the purpose, the antifuse circuit includes a power-up detecting circuit for generating a power stabilization signal by detecting a supply voltage; a power-up pulse circuit for generating a first and a second control signal in response to the power stabilization signal; an antifuse programming circuit for, under the control of the first and the second control signals, detecting whether an antifuse element is programmed or not, latching the result of the detection and programming the antifuse element in response to an external high voltage and a precharge signal; a pin for receiving the external high voltage so as to program the antifuse element; a pad for providing the external high voltage to the inside of the chip; and a diode for supplying the external high voltage to the antifuse programming circuit and preventing a voltage of the antifuse programming circuit from being provided to the pin.