Memory System Thermal Management via Temperature-Adaptive Command Control
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Solution Overview
Problem
Memory devices operating at cryogenic temperatures face malfunctions when temperature conditions are not maintained, leading to potential power consumption issues and operational instability.
Innovation Solution
A memory system that predicts and controls heat generation by generating and managing command signals based on temperature information, transitioning between training and normal modes to optimize operations and prevent overheating, utilizing a control device and memory device configuration that includes sensors and counters to monitor and adjust signal generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a memory device operates at cryogenic temperature to reduce power consumption and extend data retention time, then power efficiency is improved, but the device becomes vulnerable to malfunctions when temperature conditions are not maintained
Solution Approach 1:
The control device continuously monitors the operating temperature of the memory device and adjusts command signal generation accordingly. When the temperature deviates from the cryogenic range, the control device reduces command signal frequency or transitions to self-refresh mode, creating a feedback loop that maintains both power efficiency and operational reliability across varying temperature conditions
Solution Approach 2:
The system dynamically adapts its operating mode based on real-time temperature conditions. The control device transitions between active command signal generation and self-refresh modes, and adjusts refresh periods according to temperature, allowing the memory device to maintain reliability while optimizing power consumption for the current thermal environment
2Productivity
If the control device generates command signals frequently to maintain memory operations, then operational performance is improved, but heat generation increases causing temperature rise
Solution Approach 1:
The control device implements periodic command signal generation with adjustable frequencies based on temperature conditions. Instead of continuous high-frequency operations, the system uses periodic bursts of command signals interspersed with lower-activity periods or self-refresh modes, maintaining operational performance while allowing heat dissipation between active periods
Solution Approach 2:
The control device predicts potential heat generation by monitoring temperature trends and proactively adjusts command signal generation before excessive heat accumulates. When temperature approaches threshold levels, the system preemptively reduces command signal frequency or triggers self-refresh mode, preventing thermal runaway while maintaining operational continuity
3Temperature
If the control device monitors temperature and adjusts command signals in real-time to control heat generation, then temperature control is improved, but device complexity increases
Solution Approach 1:
The control device integrates multiple functions into a single controller unit: temperature monitoring, command signal generation, refresh operation control, and mode switching. This universal controller handles all temperature-dependent operations without requiring separate dedicated circuits for each function, achieving effective temperature control while minimizing the increase in device complexity
Data Source
AI summary
A memory system includes a control device suitable for generating first command signals for a unit time and storing first count information corresponding to the number of times to generate the first command signals based on temperature information, in a training mode, and generating second command signals based on the first count information and second count information in a normal mode, the second count information corresponding to the number of times to generate the second command signals for the unit time, and a memory device suitable for performing an internal operation based on the first command signals and providing the control device with the temperature information when performing the internal operation, in the training mode, and performing an internal operation based on the second command signals in the normal mode.