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:
Sep. 28, 1999
Filed:
Nov. 24, 1997
Dong-il Seo, Yongin, KR;
Tae-seong Jang, Suwon, KR;
Samsung Electronics, Co., Ltd., Suwon, KR;
Abstract
A column select line enable circuit prevents the first bit in a sequence of output data from being missed, thereby reducing tRCD in a synchronous memory device. The circuit delays a predetermined period of time after a row active command is applied to the memory device and then activates a column select enable line regardless of the state of the system clock signal. The column select enable line is maintained in an active state for a second period of time to allow the first bit of data to be read from the device. Thereafter, the column select enable line is enabled and disabled responsive to the system clock signal to read the remaining bits in the sequence of output data in a conventional manner. In a preferred embodiment, the circuit does not enable the column select enable line unless a decoded bank address signal is active.