Static information storage and retrieval – Read only systems – Resistive
Reexamination Certificate
2008-01-22
2008-01-22
Nguyen, Tuan T. (Department: 2824)
Static information storage and retrieval
Read only systems
Resistive
C365S104000, C365S148000, C365S225700
Reexamination Certificate
active
07321501
ABSTRACT:
A programmable resistor is an e-fuse connecting to a source/drain of a MOS transistor. A voltage is provided to the gate of the MOS transistor to partially blow the programmable resistor. Following that, a resistance comparator is used to compare the resistance of the programmable resistor to a predetermined resistance. If the resistance of the programmable resistor conforms to the predetermined resistance, then the programmable resistor is set. If it does not conform to the predetermined resistance, then it is determined whether partially blowing it again would make it exceed the predetermined resistance. If it will exceed the predetermined resistance, then it is not blown again. If it will not exceed the predetermined resistance, then the resistor is partially blown again so as to approach the predetermined resistance.
REFERENCES:
patent: 6888745 (2005-05-01), Ehiro et al.
patent: 7202532 (2007-04-01), Czech
patent: 2006/0067104 (2006-03-01), Hsu
patent: 2006/0108662 (2006-05-01), Kothandaraman
patent: 2006/0158239 (2006-07-01), Bhushan
patent: 2006/0267669 (2006-11-01), Robinson
Hsu Winston
Luu Pho M.
Nguyen Tuan T.
United Microelectronics Corp.
LandOfFree
Method for trimming programmable resistor to predetermined... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for trimming programmable resistor to predetermined..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for trimming programmable resistor to predetermined... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2759568