Semiconductor Integrated Circuit Chip Selection Signal Management
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Solution Overview
Problem
Current semiconductor packaging technologies face challenges in efficiently managing and controlling multiple semiconductor chips in a stack package configuration, particularly in generating and distributing selection and setting signals across vertically stacked chips for optimal performance and reliability.
Innovation Solution
A semiconductor integrated circuit design that includes chip selection, selective setting, and common setting units within each chip, allowing for the generation and transfer of internal signals in response to external selection and setting signals, enabling common and selective activation of signals across multiple semiconductor chips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple semiconductor chips are stacked vertically to increase memory capacity and mounting density, then the memory capacity and mounting density are improved, but the complexity of controlling and managing multiple chips increases
Solution Approach 1:
The control signals are segmented into two distinct types: common chip selection signals that activate all chips simultaneously, and selective chip selection signals that target individual chips. This segmentation of control mechanisms allows the system to manage multiple chips without requiring complex individual addressing for every operation, thus resolving the contradiction between increased chip quantity and control complexity
Solution Approach 2:
The chip selection units are designed with multi-functionality to handle both common and selective chip selection signals through the same basic circuitry. Each chip selection unit can respond to either type of signal, allowing a unified control architecture to manage multiple chips in different modes, thereby reducing overall system complexity while maintaining high memory capacity
2Productivity
If common chip selection signals are used to activate all chips simultaneously, then the efficiency of common operations is improved, but the ability to selectively access individual chips is reduced
Solution Approach 1:
The chip selection units dynamically respond to different signal types based on the operational requirements. When a common chip selection signal is received, all chips activate their common setting units simultaneously for high-speed common operations. When selective chip selection signals are received, only the targeted chips activate their selective setting units. This dynamic behavior allows the system to switch between high-efficiency common operations and precise selective access as needed
3Measurement precision
If selective chip selection signals are used to access individual chips, then the precision of chip access is improved, but the time required for signal distribution across multiple chips increases
Solution Approach 1:
The patent replaces traditional mechanical or sequential signal distribution methods with parallel electrical signal paths. Selective chip selection signals are distributed simultaneously to all chip selection units through dedicated signal lines, allowing each chip to independently process the signal in parallel. This substitution of parallel electrical signaling for sequential mechanical switching eliminates signal distribution time delays while maintaining precise selective access capability
Data Source
AI summary
A semiconductor integrated circuit includes a plurality of semiconductor chips. Each of the plurality of semiconductor chips includes a chip selection unit suitable for generating an internal chip selection signal in response to one or more selective chip selection signals and transferring the selective chip selection signals to an adjacent semiconductor chip of the plurality of semiconductor chips, a selective setting unit suitable for generating a selective internal signal, selectively activated in each semiconductor chip, in response to the internal chip selection signal and an external setting signal, and a common setting unit suitable for generating a common internal signal, activated in common in the plurality of semiconductor chips, in response to the setting signal and an external common chip selection signal.