Browse Prior Art Database

Method for magnetic pin memory

IP.com Disclosure Number: IPCOM000010414D
Publication Date: 2002-Nov-27
Document File: 4 page(s) / 80K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for magnetic pin memory (MPM). Benefits include improved functionality.

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Method for magnetic pin memory

Disclosed is a method for magnetic pin memory (MPM). Benefits include improved functionality.

General description

        � � � � � The disclosed method is nonvolatile magnetic-core memory using the pins that protrude from integrated circuit (IC) packages. In the simplest cases, each pin is reversibly magnetized in one of two directions, designated as 0 and 1, using the principles of core memory to read and write the pins.

        � � � � � Possible uses of MPM include:

•        � � � � Self-documenting IC devices, which put part numbers on the pins

•        � � � � Storage of performance and quality-related information for use during the sort process

•        � � � � Encrypted IC passwords requiring confirmation before parts can be used

•        � � � � Supporting information transfer via a magnetic bus using magnetic polarity changes on the pins, providing a significant increase in the information channel capacity of a pin array at low cost

        � � � � � The functional requirements for the method are as follows:

•        � � � � Capability to manufacture functional IC pins that are magnetically susceptible and have magnetic hysteresis for that the read/write technology of core memory

•        � � � � Capability to manufacture, either on the IC package, itself, or, alternatively, in a compatible socket, a matrix of read, write and sense lines to place and sense the magnetic 0s and 1s in the pins

•        � � � � Capability to program the appropriate current pulses and build the appropriate sense amplifiers, either external to the IC part or in the IC, sufficient to read, write, and sense the magnetized pins

•        � � � � Sufficient noise immunity so that the magnetized pins can be reliably read and written while not interfering with the IC circuits the pins are part of (without interfering with the primary input/output circuit functionality of the pins)

        � � � � � The key elements of the method include:

•        � � � � Ferromagnetic pin that exhibits sufficient magnetic hysteresis to store information

•        � � � � Way to read and write the data, which is stored as magnetic 0s and 1s in the pins

Advantages

        � � � � � Some implementations of the disclosed structure and method provide one or more of the following advantages:

•        � � � � Improved functionality due to utilizing pins as memory as well as typical pin functions

•        � � � � Improved functionality due to using red, green, and blue wires to read and write values to pins

•        � � � � Improved functionality due to the capability for pins to function as a magnetic bus

•        � � � � Improved functionality due to the complete eraseability of any memory placed on the pins in magnetic form

Detailed description

� � � � � � �

        � � � � � The disclosed method is magnetic pin memory (MPM). Implementation is as the pin array of a microprocessor package where the pins are manufactured of some suitable magnetic core material with sufficient stiffness to function as pins.

        � � � � � One implementation is as the pin array of a modern micro...