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:
Mar. 22, 2005
Filed:
Sep. 15, 2003
Choong-keun Kwak, Suwon, KR;
Bo-tak Lim, Yongin, KR;
Choong-Keun Kwak, Suwon, KR;
Bo-Tak Lim, Yongin, KR;
Samsung Electronics Co., Ltd., Kyungki-do, KR;
Abstract
In a mode entrance control circuit and a mode entering method to stably enter a semiconductor memory device into a predetermined operating mode only when insensitive to a change of a process, temperature, or voltage, etc., and simultaneously satisfying a constant entrance condition, the mode entrance control circuit includes an operation control part for generating an operation enable signal when a first voltage applied through a first pad is over a first determination voltage, a voltage division part for dividing a second voltage applied through a second pad to generate a trimming reference voltage, and a mode entrance signal generating part operated in response to the operation enable signal, for comparing a level of an applied fixed reference voltage with a level of the trimming reference voltage, and for generating a mode entrance enable signal to allow the semiconductor memory device to enter into a predetermined mode.