Data output impedance control

Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

371 225, G01R 3128

Patent

active

054555175

ABSTRACT:
The present invention provides an apparatus and method for monitoring the functioning of a special operational mode on an integrated circuit module without the need for a special or dedicated pin. By monitoring the data output pins of the module operation in a special operational mode and premature interruption thereof, is detected. Delayed transition from a state of low impedance to a state of high impedance during the data output cycle is indicative of the special operational mode. The modules which usually have tri-state devices on their output lines are provided with delay circuitry to delay the transition of the tri-state device, during the data output cycle, from a state of low impedance to a state of high impedance while the device remains in a special operating mode.

REFERENCES:
patent: 3143702 (1964-08-01), Kohler et al.
patent: 4168796 (1979-09-01), Fulks et al.
patent: 4169244 (1979-09-01), Plows
patent: 4242751 (1980-12-01), Henckels et al.
patent: 4529895 (1985-07-01), Garverick et al.
patent: 4629907 (1986-12-01), Kosak
patent: 4709366 (1987-11-01), Scott et al.
patent: 4761607 (1988-08-01), Shiragasawa et al.
patent: 4811299 (1989-03-01), Miyazawa et al.
patent: 4875002 (1989-10-01), Sakamoto et al.
patent: 4907183 (1990-03-01), Tanaka
patent: 4951254 (1990-08-01), Ontrop et al.
patent: 4982380 (1991-01-01), Koike
patent: 5051995 (1991-09-01), Tobita
patent: 5117324 (1992-05-01), Johnson, Jr.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Data output impedance control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data output impedance control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data output impedance control will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1079591

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.