Title:
CIRCUIT AND METHOD FOR TRIMMING LOCKING OF INTEGRATED CIRCUITS
Document Type and Number:
WIPO Patent Application WO/2004/105088
Kind Code:
A2
Abstract:
A trimming locking circuit (100) is provided for IC using a programmable fuse array (2) for after-assembly trimming procedures. In one embodiment, a trimming locking circuit is provided for a single power supply input into the programmable fuse array (2). In another embodiment, a trimming locking circuit is provided to operate with two or more power supply inputs. The trimming locking circuit electrically isolates the programmable fuse array (2) from over voltage conditions on the power supplies.
Inventors:
Spenea, Marian Udrea (1329 Essex Way, San Jose, CA, 95117, US)
Bucur, Constantin (3429 Santa Barbara Avenue, Santa Clara, CA, 95051, US)
Niculae, Marian (1570 San Tomas Aquino Road, Apartment 39 San Jose, CA, 95130, US)
Simion, George (1075 Ranchero Way #8, San Jose, CA, 95117, US)
Marinescu, Viorel (1560 San Tomas Aquino Road #23, San Jose, CA, 95130, US)
Bucur, Constantin (3429 Santa Barbara Avenue, Santa Clara, CA, 95051, US)
Niculae, Marian (1570 San Tomas Aquino Road, Apartment 39 San Jose, CA, 95130, US)
Simion, George (1075 Ranchero Way #8, San Jose, CA, 95117, US)
Marinescu, Viorel (1560 San Tomas Aquino Road #23, San Jose, CA, 95130, US)
Application Number:
PCT/US2004/014981
Publication Date:
December 02, 2004
Filing Date:
May 13, 2004
Export Citation:
Assignee:
O2MICRO, INC. (3118 Patrick Henry Drive, Santa Clara, CA, 95054, US)
Spenea, Marian Udrea (1329 Essex Way, San Jose, CA, 95117, US)
Bucur, Constantin (3429 Santa Barbara Avenue, Santa Clara, CA, 95051, US)
Niculae, Marian (1570 San Tomas Aquino Road, Apartment 39 San Jose, CA, 95130, US)
Simion, George (1075 Ranchero Way #8, San Jose, CA, 95117, US)
Marinescu, Viorel (1560 San Tomas Aquino Road #23, San Jose, CA, 95130, US)
Spenea, Marian Udrea (1329 Essex Way, San Jose, CA, 95117, US)
Bucur, Constantin (3429 Santa Barbara Avenue, Santa Clara, CA, 95051, US)
Niculae, Marian (1570 San Tomas Aquino Road, Apartment 39 San Jose, CA, 95130, US)
Simion, George (1075 Ranchero Way #8, San Jose, CA, 95117, US)
Marinescu, Viorel (1560 San Tomas Aquino Road #23, San Jose, CA, 95130, US)
International Classes:
G11C17/18; H01H37/76; H01H85/00; H01L23/58; G11C17/14; H01H37/00; H01H85/00; H01L; H01L23/58; (IPC1-7): H01L/
Attorney, Agent or Firm:
Pfleger, Edmund P. (Grossman, Tucker Perreault & Pfleger, PLLC, 55 South
Commercial Stree, Manchester NH, 03101, US)
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