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INTERFACING ELECTRO-MECHANICAL LOADS TO MICROPROCESSORS

IP.com Disclosure Number: IPCOM000027047D
Original Publication Date: 1995-Feb-28
Included in the Prior Art Database: 2004-Apr-07
Document File: 4 page(s) / 132K

Publishing Venue

Xerox Disclosure Journal

Abstract

A common situation is interfacing an electromechanical load with a microprocessor. One problem with interfacing an electromechanical load with a microprocessor is that the drive requirements of the electromechanical load is usually outside the capability of the microprocessor device. To meet these drive requirements, it is conventional to add a circuit board between the electromechanical load and the microprocessor device. An alternative solution is to incorporate a higher capability driver into the load or to include the higher capability driver within the confines of the microprocessor. Although these solutions will enable the connection of an electromechanical load requiring a higher drive current and a microprocessor device, these solutions reduce the interconnectability between electromechanical loads and microprocessor units. More specifically, if the higher capability driver is incorporated in the microprocessor unit, one output slot of the microprocessor unit would then be dedicated to connections to electromechanical loads, thus reducing the configurability of the microprocessor.

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Page 1 of 4

XEROX DISCLOSURE JOURNAL

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  To Electrical- Mechnical Load

INTERFACING ELECTRO- MECHANICAL LOADS TO MICROPROCESSORS Timothy M. Minerd

Connector plug with Integrated

Proposed Classification

U.S. C1.339/017L Int. C1. H05k 1/07

Connector End Cap

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XEROX DISCLOSURE JOURNAL - Vol. 20, No. 1 January/February 1995 21

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Page 2 of 4

INTERFACING ELECTROMECHANICAL LOADS TO MICROPROCESSORS (Cont'd)

A common situation is interfacing an electromechanical load with a microprocessor. One problem with interfacing an electromechanical load with a microprocessor is that the drive requirements of the electromechanical load is usually outside the capability of the microprocessor device. To meet these drive requirements, it is conventional to add a circuit board between the electromechanical load and the microprocessor device. An alternative solution is to incorporate a higher capability driver into the load or to include the higher capability driver within the confines of the microprocessor. Although these solutions will enable the connection of an electromechanical load requiring a higher drive current and a microprocessor device, these solutions reduce the interconnectability between electromechanical loads and microprocessor units. More specifically, if the higher capability driver is incorporated in the microprocessor unit, one output slot of the microprocessor unit would then be dedicated to connections to electromechanical loads, thus reducing the configurability of the microprocessor.

To maintain the configurability of the microprocessor and the interchangeability of the electromechanical loads, it is proposed that the high current drivers needed to drive electromechanical loads be incorporated on the electromechanical side of the interface between the electromechanical load and a microprocessor device. More specifically, the high current driver, to minimize its effect on interchangeability and configurability, is integrated in either the normally required connector to the microprocessor device, or by adding the high current driver to the IN cap of the electromechanical load.

As shown in the Figure, the electromechanical load may have a male co...