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:
Jun. 30, 2009
Filed:
Jun. 21, 2007
Jang-won Moon, Anyang-si, KR;
Jong-hyoung Lim, Hwaseong-si, KR;
Jang-won Moon, Anyang-si, KR;
Jong-Hyoung Lim, Hwaseong-si, KR;
Abstract
An input/output sense amplifier (IOSA) controller of a semiconductor memory device includes an auto pulse generator and a latch enable signal generating circuit. The auto pulse generator generates an auto pulse signal having a first pulse shape. The latch enable signal generating circuit generates a first latch enable signal having a second pulse shape in response to an auto pulse signal in normal mode, and generates a second latch enable signal having a level shape that is enabled for long duration in response to the write enable bar signal in test mode. Accordingly, the semiconductor memory device including the IOSA controller may safely test a characteristic of the IOSA.