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. 05, 1989
Filed:
Feb. 11, 1988
A David Hashemi, Santa Clara, CA (US);
Robert M Reinschmidt, Losgatos, CA (US);
Digital Equipment Corporation, Maynard, MA (US);
Abstract
A bipolar random access memory having no write recovery time. During a data write operation, while the memory state of the memory cell is being shifted, a data bypass circuit sets a sense latch in the sense amplifier to store the new state to which the memory cell is being set. To prevent the sense latch from being shifted by transient write recovery currents charging bit line parasitic capacitances following the data write operation, a read/write transmission circuit isolates the sense amplifier from the bit lines, diverts current from the sense amplifier to a source of high voltage to charge the parasitic capacitances, and then realigns the sense amplifier to the bit lines.