Memory Device Temperature Sensing and Adaptive Voltage Control
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Solution Overview
Problem
Highly integrated and downscaled memory devices are increasingly affected by temperature variations, necessitating precise temperature control to maintain optimal performance, but existing technologies lack efficient methods for temperature sensing and adaptive control.
Innovation Solution
A memory device and system that includes a temperature sensor and control logic to sense temperature and generate responses to commands, allowing for precise temperature information retrieval and adaptive adjustment of memory control characteristics such as read voltages and program verify voltages based on sensed temperature ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If memory devices are highly integrated and downscaled, then storage capacity and density are improved, but temperature variation influence increases and performance stability deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the memory device continuously monitors its own temperature through a temperature sensor and adjusts operational parameters accordingly. The controller receives temperature information from the memory device and dynamically modifies read voltages, program voltages, and verify voltages to compensate for temperature-induced performance degradation, thereby maintaining reliable operation in highly integrated and downscaled memory devices.
Solution Approach 2:
The patent changes operational parameters (voltages and currents) based on detected temperature conditions. Specifically, read voltages, program voltages, and verify voltages are adjusted according to temperature ranges to compensate for the increased influence of temperature variation in highly integrated and downscaled memory devices, thus maintaining performance stability while preserving high storage capacity.
2Measurement precision
If temperature sensing and control mechanisms are added to memory devices, then temperature control precision is improved, but device complexity increases
Solution Approach 1:
The patent merges the temperature sensing function with the existing memory device structure by integrating a temperature sensor within the memory device itself. This consolidation allows temperature monitoring to be performed without adding separate external sensing systems, thereby improving temperature measurement precision while minimizing the increase in device complexity through functional integration.
Solution Approach 2:
The memory device performs self-temperature monitoring and self-reporting to the controller. The integrated temperature sensor automatically detects temperature conditions and the memory device generates temperature information that is transmitted to the controller, eliminating the need for external temperature sensing infrastructure and reducing overall system complexity while maintaining precise temperature measurement.
3Measurement precision
If multiple commands are used for temperature sensing, then temperature information accuracy is improved, but operation time increases
Solution Approach 1:
The patent implements preliminary temperature sensing by detecting temperature conditions during ongoing memory operations rather than requiring separate dedicated sensing commands. The temperature is sensed during program, read, or erase operations, allowing temperature information to be obtained as a byproduct of normal operations, thus maintaining accurate temperature measurement while minimizing additional operation time.
Solution Approach 2:
The patent combines temperature sensing with existing memory operations by triggering temperature detection during program, read, or erase commands. This merging of functions allows the same operational infrastructure to serve dual purposes: performing memory operations and simultaneously acquiring temperature information, thereby improving temperature measurement accuracy without proportionally increasing operation time.
4Measurement precision
If temperature information is always transmitted, then temperature monitoring accuracy is improved, but communication overhead increases
Solution Approach 1:
The patent implements partial temperature information transmission by selectively reporting temperature data only when it is relevant to current operations or when temperature thresholds are exceeded. Rather than continuously transmitting all temperature information, the system transmits temperature data in a condensed format or only when operational adjustments are required, maintaining accurate temperature monitoring while reducing communication overhead through targeted information transfer.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient and precise temperature control of memory devices, improving their performance and reliability by allowing for dynamic adjustments in response to temperature variations, thus optimizing operations and reducing errors.
Implementation Method 1
sensing, by a memory device, a temperature of the memory device
Data Source
AI summary
In one embodiment, the method includes sensing, by a memory device, a temperature of the memory device; and generating, by the memory device, a response to a single received command. The response includes temperature information, and the temperature information provides information on the sensed temperature. In one embodiment, the single received command is a read status request command, the read status request command requests status information on the memory device, and the status information includes the temperature information.