The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 30, 1995
Filed:
May. 24, 1994
Janice L Benzel, Austin, TX (US);
Nigel J Allison, Austin, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A pin generated interrupt system in a digital data processor is capable of generating interrupt requests in order to awaken the digital data processor from a reduced state of activity and power consumption called stop mode. The user can permanently disable the pin generated interrupt system using a mask option chosen during the manufacturing process. A register bit that determines whether the pin is an input or an output is also used to enable compare circuitry that determines whether an external device is requesting an interrupt. When a plurality of pins are used, it is only necessary for an interrupt to be requested on one of the pins in order for an interrupt request signal to be generated.