Semiconductor Chip Normal Inverse Pad Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current semiconductor technologies face challenges in efficiently selecting and controlling multiple memory chips using a limited number of signal lines, leading to complexity and reduced yield in memory systems.
Innovation Solution
The implementation of semiconductor chips with a combination of normal and inverse pads connected through conduction lines and logic gates allows for independent selection of memory chips using fewer signal lines, enabling efficient chip selection and activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple memory chips are selected using traditional signal lines, then chip selection functionality is achieved, but the number of signal lines increases leading to system complexity
Solution Approach 1:
The patent applies inversion by using both normal and inverse pads for chip selection. Instead of using only normal signal lines, the invention introduces inverse signal lines that are logically inverted versions of the normal lines. This allows the system to encode more selection states in fewer physical signal lines, as each signal line can now represent multiple states (normal, inverse, and their combinations) rather than just binary states.
2Adaptability or versatility
If more signal lines are used for chip selection, then more memory chips can be selected, but the manufacturing complexity and yield reduction occur
Solution Approach 1:
The patent merges normal and inverse pads into a unified chip selection mechanism. By combining these two types of pads and using logic gates to process their signals, the invention achieves the functionality of selecting multiple memory chips while using fewer physical signal lines. This merging reduces the overall number of connections required, thereby simplifying the manufacturing process and improving yield.
Solution Approach 2:
The normal and inverse pads serve multiple functions: they can individually select chips, work in combination to provide encoded selection, and allow for flexible configuration of memory chip connections. This multi-functionality enables the same pad structure to support various memory configurations without requiring additional dedicated signal lines for each chip, thus improving ease of manufacture.
3Productivity
If traditional chip selection method is used, then simple structure is maintained, but inefficient chip selection and control occur
Solution Approach 1:
The patent adds a logical dimension to the physical signal lines by introducing inverse pads that operate in parallel with normal pads. This creates a two-dimensional signal space (normal and inverse) that can be projected onto fewer physical lines through logical operations. The logic gates perform the dimensionality reduction by combining the two-dimensional pad signals into efficient selection codes, achieving high-speed chip selection without proportionally increasing physical structure complexity.
Data Source
AI summary
A semiconductor chip includes a plurality of signal and power pads; and a plurality of chip selection pads, wherein at least one of the plurality of chip selection pads includes a normal pad and an inverse pad.