Hybrid Hall Effect Magnetoelectronic Gate for Nonvolatile Logic
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Solution Overview
Problem
Magnetic field controlled avalanche diodes (MFCADs) are promising for nonvolatile logic but are in an early stage of research and development, lacking commercialization and effective integration with other magnetoelectronic devices due to limitations in fanout and reproducibility of current sources, which are crucial for digital logical processing.
Innovation Solution
Development of Hybrid Hall Effect (HHE) devices and composite circuits that include magnetoelectronic devices with semiconductor transistors, enabling ALUs to perform reconfigurable functions like AND, OR, NAND, NOR, and XOR with CMOS level outputs, and integration with CMOS FETs for improved nonvolatile logic and memory applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If MFCADs are used for nonvolatile logic operations, then power consumption is reduced, but fanout capability and current source reproducibility deteriorate
Solution Approach 1:
The patent introduces CMOS buffer circuits as intermediary components between MFCAD logic cells. These buffers amplify and reproduce current signals, enabling reliable fanout to multiple downstream devices while preserving the low-power nonvolatile operation of the MFCAD core logic elements.
Solution Approach 2:
The patent combines MFCAD magnetoelectronic devices with CMOS semiconductor devices to create hybrid logic circuits. This merging allows the system to leverage the low-power advantages of MFCADs while compensating for their limited fanout capability through integrated CMOS signal amplification and distribution circuits.
2Duration of action of stationary object
If MFCADs are used for logic operations, then nonvolatile operation is achieved, but integration with other magnetoelectronic devices and commercialization is limited
Solution Approach 1:
The patent designs MFCAD-based logic cells with universal interfaces that can interact with both other magnetoelectronic devices and standard CMOS circuits. The hybrid architecture enables the same MFCAD cell to function in various logic configurations and be integrated into different system architectures, enhancing adaptability and commercialization potential.
Solution Approach 2:
The patent employs parameter transformation between magnetoelectronic and semiconductor domains, converting magnetic field-controlled current outputs from MFCADs into voltage signals suitable for CMOS integration. This parameter change enables seamless interfacing between different device types while maintaining nonvolatile operation.
3Productivity
If traditional semiconductor technology is used for logic operations, then continuous operation is maintained, but power consumption increases
Solution Approach 1:
The patent implements periodic pulsing of MFCAD devices to perform logic operations only when needed, rather than continuous operation. Current pulses are applied to MFCADs on-demand to compute logic functions, and results are latched in nonvolatile memory elements, allowing the system to consume zero power during idle periods while maintaining operational capability.
Solution Approach 2:
The patent utilizes the inherent nonvolatile memory capability of MFCADs to store computation results without requiring continuous power. The system serves itself by automatically retaining logic states in the magnetoelectronic memory elements, eliminating the need for continuous refresh operations that would consume power in traditional volatile memory systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The HHE devices provide reproducible CMOS level outputs, expanding the utility of ALUs and enabling efficient nonvolatile logic and memory operations, allowing for significant power savings and integration with traditional semiconductor devices, addressing the limitations of MFCADs.
Implementation Method 1
Hybrid hall effect magnetoelectronic gate
Data Source
AI summary
Hybrid Hall Effect Devices implemented with Spin Transfer Torque write capability are configured as magnetoelectronic (ME) devices. These devices are useable as circuit building blocks in reconfigurable processing systems, including as logic circuits, non-volatile switches and memory cells.