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. 31, 1995
Filed:
Jun. 08, 1994
Thierry Cantiant, Dannaire-Les-Lys, DC (US);
Bertrand Gabillard, Paris, DC (US);
Jean-Paul Mifsud, Lieusaint, DC (US);
Stuart Rapoport, Washington, DC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An integrated circuit incorporating at least a SRAM that includes memory, a data-out shift register, an ABIST data compression circuit, a fail address register and an array clock generator (ACG), the ACG comprising a clock chopper that comprises a first AND gate having an inherent delay DEL1, a first input for receiving a D clock signal, a second input for receiving the D signal inverted by an invertor having an inherent delay DEL2, and an output that generates an ungated LSSSD C clock signal; and a second AND gate having an inherent delay DEL4, a first input connected to the output of an inverter having an inherent delay DEL3, the inverter is coupled to the invertor having the delay DEL2, a second input is controlled by the D clock signal and an output for generating LSSD clock signals B and S.