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. 18, 1994
Filed:
May. 15, 1992
Applicant:
Inventors:
Chuan-Yung Hung, Cupertino, CA (US);
Ray-Lin Wan, Milpitas, CA (US);
Assignee:
Altera Corporation, San Jose, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
307465 ; 307443 ; 3072722 ; 307480 ;
Abstract
A programmable logic device in which macrocell register reset time, T.sub.clear, and set time, T.sub.set, are comparable in speed to the combinatorial propagation delay time, T.sub.pd. In setting or resetting the macrocell register, the Set (Reset) signal is applied simultaneously to a clocked master latch in the macrocell register and to an output node. During the Set (Reset) period the slave latch of the macrocell register is disconnected from the output node.