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. 09, 1995
Filed:
Apr. 19, 1993
Applicant:
Inventors:
Jeffery A Floyd, Round Rock, TX (US);
Lloyd P Matthews, Buda, TX (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
327198 ; 327 43 ; 327407 ; 326 46 ;
Abstract
An integrated circuit (20) configures the active level of an input, output, or input/output pin by sensing a logic state on the pin's bonding pad (21) at the inactivation of a reset signal, such as a power-on reset signal. The integrated circuit (20) selects a true or complement signal to provide to or from an internal circuit (25). The voltage level on the pin is latched on the active-to-inactive transition of the power-on reset signal. Thus, the use of proper board-level termination resistors (70, 71) programs the pins to the desired active logic level without the need for additional logic circuitry or a dedicated device pin.