Process corner indicator and estimation circuit

Details Process corner indicator and estimation circuit Process corner indicator and estimation circuit

2005-11-14

2009-12-01

Whitmore, Stacy A (Department: 2825)

Computer-aided design and analysis of circuits and semiconductor

Nanotechnology related integrated circuit design

C716S030000, C327S100000, C700S121000

Reexamination Certificate

active

07627839

ABSTRACT:
A process corner indicator circuit can be included with each die formed from a silicon wafer in order to quickly and easily give a determination of process corner. A clock generator circuit of the indicator circuit can include an array of flip-flop elements, and can be run at a lower operating voltage, such that the differences in delay in the generated timing signal are accentuated for different process corners. The period of the timing signal can be determined using slow and fast clock counters, with the slow clock counting a number of cycles of the timing signal and the fast clock counting a number of cycles of a fixed frequency. The count produced by the fast clock can correspond to the delay in the clock generator circuit, giving an indication of the process corner of the die.

REFERENCES:
patent: 6480127 (2002-11-01), Aslan
patent: 6710637 (2004-03-01), Chan
patent: 6808307 (2004-10-01), Aslan et al.
patent: 6874933 (2005-04-01), Chan
patent: 6914452 (2005-07-01), Gauthier et al.
patent: 6930526 (2005-08-01), Silva
patent: 6930542 (2005-08-01), Aude
patent: 2001/0049812 (2001-12-01), Lutkemeyer
patent: 2004/0051562 (2004-03-01), Gauthier et al.
patent: 2005/0057230 (2005-03-01), Saha et al.
patent: 2006/0026544 (2006-02-01), Engel et al.
patent: 2007/0089078 (2007-04-01), Engel et al.
patent: 2007/0110194 (2007-05-01), de Obaldia et al.
patent: 2008/0263490 (2008-10-01), Lewis et al.

Affiliated with

Also associated with

Rating

Process corner indicator and estimation circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process corner indicator and estimation circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process corner indicator and estimation circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4111431