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:
Jan. 09, 2001
Filed:
Dec. 30, 1999
Giuseppe Vito Portacci, Vimercate, IT;
STMicroelectronics, S.r.l., Agrate Brianza, IT;
Abstract
Described is an SRAM cell made from two cross-coupled inverters. The output from each inverter is a data node, and the two data nodes store logical complementary signals. Each data node is connected to a pass transistor that is coupled directly to the power supply voltage, rather than coupled to a pair of bitlines. The inverters can be connected to a reading circuit, a writing circuit, or a stand-by circuit as desired for different phases of the memory operation. Data is read from the SRAM cell by using a current sensing differential amplifier. Data is written to the SRAM cell by controlling voltages on the cross-coupled inverters, and compatible with conventional writing signals.