I/O Ring Voltage Detector Circuit for Multi-Supply Adaptation
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Solution Overview
Problem
Integrated circuit (IC) chips face the challenge of requiring re-fabrication of their input-output (I/O) rings when the supply voltage changes, leading to increased costs and size due to the need for redesigning I/O cells to operate at new voltage levels, which also increases power consumption and heat dissipation.
Innovation Solution
Incorporating a voltage detector circuit within the I/O ring that senses the I/O supply voltage and generates a control signal to configure the I/O cells to operate at the appropriate voltage level, allowing automatic adaptation without manual intervention and reducing the need for additional I/O pads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the I/O ring is configured to operate at a fixed supply voltage level, then the I/O ring operates reliably at that voltage, but the I/O ring becomes obsolete when the IC chip supply voltage changes, requiring re-fabrication
Solution Approach 1:
The I/O ring is designed with dynamic voltage adaptation capability through voltage detector circuits that automatically sense the IC chip supply voltage and configure the I/O ring accordingly. This allows the I/O ring to adapt its operating voltage dynamically rather than being fixed, resolving the contradiction between reliability and adaptability.
Solution Approach 2:
The voltage detector circuit automatically detects the supply voltage level and configures the I/O ring without external intervention. The system serves itself by autonomously adapting to voltage changes, eliminating the need for manual reconfiguration or re-fabrication when supply voltage changes.
2Reliability
If the I/O ring is re-fabricated for a new supply voltage level, then the I/O ring operates correctly at the new voltage, but the chip size and manufacturing cost increase
Solution Approach 1:
The I/O ring is designed with multi-functionality to operate at multiple supply voltage levels through the voltage detector circuit. This universal design allows the same I/O ring structure to function reliably across different voltage levels without requiring separate designs or re-fabrication for each voltage level.
Solution Approach 2:
The I/O ring configuration is changed by adjusting voltage detection parameters rather than physical re-fabrication. The voltage detector circuit senses the supply voltage and automatically configures the I/O ring parameters, allowing the same physical structure to adapt to different voltage levels through parameter changes.
3Adaptability or versatility
If manual configuration of I/O cells is performed for voltage changes, then the I/O ring adapts to new voltage levels, but manual errors increase and productivity decreases
Solution Approach 1:
The voltage detector circuit automatically detects the supply voltage level and configures the I/O ring without external intervention. This self-service mechanism eliminates manual configuration steps, preventing manual errors and significantly improving productivity by enabling automatic adaptation to voltage changes.
Solution Approach 2:
The voltage detector circuit provides feedback about the detected supply voltage level to the I/O ring configuration system. This feedback mechanism enables automatic closed-loop configuration, ensuring the I/O ring is correctly adapted to the detected voltage level without manual intervention, thereby improving both accuracy and speed.
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
This solution enables IC chips to operate at multiple supply voltages without redesigning I/O cells, minimizing manual errors, reducing chip size, and maintaining functionality while lowering power consumption and heat dissipation.
Implementation Method 1
a level of an I/O supply voltage is sensed by the voltage detector circuit to generate a control signal
Data Source
AI summary
Systems and methods for achieving multiple supply voltage compatibility of an input/output (I/O) ring of an integrated circuit (IC) chip. The IC chip includes a core surrounded by the I/O ring which includes a voltage detector circuit. An I/O supply voltage of the IC chip is sensed by the voltage detector circuit to generate a control signal. The control signal is used to configure the I/O ring to operate at the I/O supply voltage of the I/O ring, thus enabling the IC to operate at multiple supply voltage levels.