On-chip integrated circuit speed selection

Details On-chip integrated circuit speed selection On-chip integrated circuit speed selection

1990-11-09

1992-03-24

Wieder, Kenneth A.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

371 161, 371 251, 324 731, G01R 1512, G06F 1100

Patent

active

050991965

ABSTRACT:
An electronic circuit for the detection of required operational speed of one or more integrated circuit semiconductor chips is used in conjunction with an off-the-shelf integrated circuit tester. The tester provides timing, control and a display. Each of the integrated circuit semiconductor chips is provided with a ring oscillator circuit for generating a series of pulses, timed by the tester for a fixed period of time. A counter, formed in each of the semiconductor chips counts the number of pulses generated during the fixed period of time. A number, generated in the tester, indicative of a required speed of operation is set in a latch assembly that is formed in each of the semiconductor chips. A comparator, also formed in each of the semiconductor chips, compares the contents of the latch with the contents of the counter and if the contents of the counter is equal to or larger than the contents of the latch, the tested semiconductor chip is acceptable. A display in the tester indicates the result. If the speed of operation is very high, then the number indicative of a required speed of operation is divided by, for example, two. The output of the oscillator is also divided by two so that the size of the counter and the latch is not exceeded.

REFERENCES:
patent: 4092589 (1978-05-01), Chau et al.
patent: 4468768 (1984-08-01), Sunkle et al.
patent: 4727549 (1988-02-01), Tulpule et al.
patent: 4866713 (1989-09-01), Worger et al.
patent: 4893072 (1990-01-01), Matsumoto

Affiliated with

Also associated with

Rating

On-chip integrated circuit speed selection does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with On-chip integrated circuit speed selection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On-chip integrated circuit speed selection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2012938