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.

Date of Patent:
Sep. 29, 1998

Filed:

Mar. 28, 1996
Applicant:
Inventors:

Christopher W Jones, Pleasanton, CA (US);

James B MacArthur, Santa Clara, CA (US);

Anita X Meng, Milpitas, CA (US);

Assignee:

Cypress Semiconductor Corp., San Jose, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
371 221 ; 371 2236 ; 371 227 ;
Abstract

A method for coding programming instructions in a complex programmable logic device (CPLD). In one embodiment, a CPLD has an instruction storage element comprising a first number of bits and requiring a first number of clock cycles to load the first number of bits. A novel method is used to instruct the device to perform at least one function comprising the steps of serially shifting a first instruction into the instruction storage element in a second number of clock cycles, and serially shifting a second instruction into the instruction storage element in a third number of clock cycles. The third number of clock cycles may be less than the first number of clock cycles. The third number of clock cycles may also be less than the second number of clock cycles. In one embodiment, the third number of clock cycles comprises one clock cycle.


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