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:
Jul. 14, 1998
Filed:
Jun. 26, 1997
Kee Woo Park, Kyoungki-do, KR;
Seung Yeub Yang, Kyoungki-do, KR;
Hyundai Electronics Industries Co., Ltd., Ichon-shi, KR;
Abstract
A circuit and a method for securing a write recovery operation in a semiconductor memory device. The write recovery security circuit comprises an external signal output unit for outputting an external signal in response to a pulse signal, a external enable signal and a write recovery signal, an external signal latch unit for performing a latch operation in response to the pulse signal, the external enable signal and the write recovery signal to latch an inverted one of the external signal from the external signal output unit while a write recovery operation is performed, and a pulse generator for supplying the pulse signal to the external signal output unit and the external signal latch unit in response to the write recovery signal and transferring the inverted external signal from the external signal output unit to the external signal latch unit in response to the pulse signal. According to the present invention, the external signal is delayed for a predetermined time period when it is inputted while or after a write operation is performed. Therefore, the write operation can be performed completely.