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:
Jun. 11, 1991
Filed:
Feb. 28, 1990
James M Arnold, Hillsboro, OR (US);
Glenn J Hinton, Portland, OR (US);
Frank S Smith, Chandler, AZ (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A random access memory cell in a register file having multiple independent read ports and multiple independent write ports that support parallel instruction execution. The RAM cell consumes low power and conforms to a tight layout pitch to meet the needs of the random access memory. A single column line is used, with the storage latch device (M 11, M 12) increased in size to provide for the noise margin loss with reference to the prior art two-column design. A single n-device (M 1) is attached to the opposite side of the cell latch (M 11, M 12) to clear the cell prior to writing zeros into the cell. The registers that are to be written are first cleared in the PH2 of the first clock cycle, with the data written in PH1 of the second clock cycle which writes the ones. The zero bits are also written at this time, but they find a cell that already is in the zero state, having been cleared in PH2 of the first clock cycle.