Centralized CA Interface Layout for Lower Memory Power Consumption
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Solution Overview
Problem
Conventional memory devices face high power consumption due to long clock signal routing distances and distributed CA input circuits, leading to increased capacitive load and buffer size requirements.
Innovation Solution
Centralized placement of CA input circuits in a compact region, reducing clock signal routing length and capacitance, and incorporating swap circuits to manage signal alignment in stacked configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If CA input circuits are distributed across the memory device, then signal routing flexibility is improved, but clock signal routing distance and capacitive load increase leading to higher power consumption
Solution Approach 1:
The patent merges all CA input circuits into a single centralized interface region located adjacent to the bonding pads. This consolidation reduces the overall clock signal routing distance and minimizes capacitive load, thereby reducing power consumption while maintaining signal routing flexibility through the unified interface design.
Solution Approach 2:
The patent repositions the CA input circuits from a distributed two-dimensional layout across the memory device to a centralized location at the periphery adjacent to bonding pads. This dimensional reorganization optimizes clock signal routing paths and reduces the total capacitance that the clock buffer must drive, directly addressing the power consumption issue.
2Loss of energy
If CA input circuits are centralized in a compact region, then power consumption is reduced by minimizing capacitive load, but signal routing flexibility decreases
Solution Approach 1:
The centralized CA input circuit interface is designed to handle multiple signal types (command signals, address signals, and clock signals) through a unified structure. This multi-functional design maintains the necessary signal routing flexibility while benefiting from the reduced capacitive load and power consumption of the centralized configuration.
3Loss of energy
If clock signal routing distance is reduced, then power consumption decreases, but buffer size requirements may increase
Solution Approach 1:
By consolidating all CA input circuits into a single centralized region, the patent creates a unified loading point for the clock signal. This allows for more efficient buffer sizing compared to distributed circuits, as the buffer only needs to drive one centralized interface rather than multiple distributed points, thereby reducing overall device complexity while maintaining low power consumption.
Data Source
AI summary
Devices are disclosed. A device may include a command and address (CA) interface including a first pair of input circuits arranged in a first direction. The CA interface further including at least one additional pair of input circuits arranged in a second direction relative to the first pair of input circuits. Associated systems are also disclosed.