Dallas Semiconductor Corporation

Shyun Liu

Wendell L Little

Stephen N Grider

Bradley M Harrington

Andreas Curiger

James E Bartling

David A Bunsey

Matt Adams

Steve Grider

An electronic module having at least a microprocessor and co-processor on a single integrated circuit. The electronic module can be contained in a small housing. The electronic module provides secure bidirectional data communication via a data bus. The electronic module may include an integrated circuit comprising a microprocessor, and a co-processor adapted to handle 1,024-bit modulo mathematics primarily aimed at RSA calculations. The electronic module is preferably contained in a small token sized metallic container and will preferably communicate via a single wire data bus which uses a one-wire protocol.

Parasitically powered microprocessor capable of transmitting data over a single data line and ground

An 8051 microprocessor core having an ability to operate via an external crystal oscillator or be switched to operate in a low power mode via an internal ring oscillator.

Microcontroller with selectable oscillator source

Microprocessor with coprocessing capabilities for secure transactions and quick clearing capabilities

An electronic module having at least a microprocessor and co-processor on a single integrated circuit. The electronic module can be contained in a small housing. The electronic module provides secure bidirectional data communication via a data bus. The electronic module may include integrated circuit comprising a microprocessor, and a co-processor adapted to handle 1,024-bit modulo mathematics primarily aimed at RSA calculations. The electronic module is preferably contained in a small token sized metallic container and will preferably communicate via a single wire data bus which uses a one-wire protocol.

Secure module with microprocessor and co-processor

Growing community of inventors

Dallas, TX, United States of America

Shyun Liu