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:
Apr. 13, 2010
Filed:
Jun. 01, 2007
Chae-hoon Kim, Yongin-si, KR;
Dae-han Kim, Seoul, KR;
Chae-Hoon Kim, Yongin-si, KR;
Dae-Han Kim, Seoul, KR;
Samsung Electronics Co., Ltd., Gyeonggi-do, KR;
Abstract
A method and apparatus for trimming a reference cell in a semiconductor memory device are provided. The method includes generating an internal bias current capable of being trimmed, and trimming the reference cell based on the internal bias current. The semiconductor memory device includes a reference cell in which a reference cell current flows between a drain and a source based on a bias voltage, an internal bias current generator configured to generate an internal bias current capable of being trimmed, and a trimming circuit configured to trim the reference cell based on the internal bias current.