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:
Aug. 24, 1999
Filed:
Nov. 22, 1996
Yuan-Mou Su, Cupertino, CA (US);
Abstract
In accordance with a preferred embodiment of the invention, the write cycle of an SRAM column is increased. The SRAM column includes at least one SRAM cell connected to the bit line and the bit line complement of the column. Further, a pair of select transistors are located below the bottom SRAM cell, where one select transistor is connected to the bit line and the other is connected to the bit line complement. The select transistors select whether the respective bit line and bit line complement is deselected or selected. The SRAM column further includes a pair of load transistors connected between the bottom SRAM cell and the pair of select transistors, where one of the load transistors is connected to the bit line and the other load transistor is connected to said bit line complement. In operation, since the load transistors are located below the bottom cell, there is no DC current supplied by the load transistors to flow through the entire bit line and bit line complement length. Therefore, the voltage drop potential on the line is reduced which increases the write cycle speed.