Configurable Logic Circuit Wiring for Mask Redesign Reduction
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Solution Overview
Problem
Existing logic circuits in semiconductor devices, such as DRAM, require additional or different logic circuits during design and manufacturing, necessitating redesign of masks, which is time-consuming and costly.
Innovation Solution
Incorporating configurable logic circuits that can be configured as various types of logic circuits, such as NAND, NOR, or multiplexers, by rearranging metal wiring patterns without the need for multiple mask redesigns, allowing for flexibility in logic function without re-designing the fabrication process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional or different logic circuits are added during design and manufacturing, then device functionality is improved, but mask redesign is required which increases time and cost
Solution Approach 1:
The patent implements a universal logic circuit block that can be configured to perform multiple different logic functions (NAND, NOR, XOR, XNOR, etc.) through programmable control signals. This single multi-functional block replaces the need for multiple dedicated logic circuits, allowing the same physical circuit to adapt to different design requirements without requiring mask redesigns.
Solution Approach 2:
The logic circuit employs dynamic configuration capabilities where the circuit's behavior can be changed during operation or manufacturing through programmable control. The circuit transitions from a static, fixed-function design to a dynamic, reconfigurable design, enabling flexibility without physical redesign of the device structure.
2Adaptability or versatility
If additional or different logic circuits are added during design and manufacturing, then device functionality is improved, but mask redesign is required which increases cost
Solution Approach 1:
The patent implements a universal logic circuit block that can be configured to perform multiple different logic functions (NAND, NOR, XOR, XNOR, etc.) through programmable control signals. This single multi-functional block replaces the need for multiple dedicated logic circuits, allowing the same physical circuit to adapt to different design requirements without requiring mask redesigns.
3Ease of manufacture
If fixed logic circuits are used, then manufacturing process is simple, but flexibility to change logic functions is lost
Solution Approach 1:
The logic circuit employs dynamic configuration capabilities where the circuit's behavior can be changed during operation or manufacturing through programmable control. The circuit transitions from a static, fixed-function design to a dynamic, reconfigurable design, enabling flexibility without physical redesign of the device structure.
Solution Approach 2:
The patent incorporates configuration control logic and programmable elements during the initial manufacturing process, preparing the circuit for future reconfiguration. This preliminary setup of control mechanisms enables flexible logic function changes later without requiring physical redesign, combining manufacturing simplicity with operational flexibility.
Data Source
AI summary
Embodiments of the disclosure are drawn to apparatuses and methods for arranging configurable logic circuits such that the configurable logic circuit may be configured to form one or more of several logic circuits by coupling a combination of nodes included in the logic circuit. Configuring the configurable logic circuit may include modification of a single wiring layer.