DRAM Temperature Detection Circuit for Low-Temperature Write Stability
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Solution Overview
Problem
Dynamic Random Access Memory (DRAM) experiences long writing times and low writing stability in low temperature environments due to increased resistances in the word line, bit line, and metal connecting lines, affecting data storage and retrieval.
Innovation Solution
A semiconductor device with a temperature detection module that activates the storage chip only when the temperature reaches a set threshold, utilizing a temperature detection unit and A/D conversion module to provide a digital signal for the control chip, which powers and heats the storage chip to ensure optimal operation, thereby avoiding low-temperature activation and improving write stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the storage chip is activated in low temperature environments, then the storage chip can operate, but the write time increases and writing stability decreases
Solution Approach 1:
The temperature detection unit detects the temperature before the storage chip is activated. The control unit receives the temperature signal and determines whether to activate the storage chip based on the detected temperature, preventing low-temperature operation before it can cause writing stability issues and extended write times
2Reliability
If the storage chip is activated without temperature detection, then the device complexity is reduced, but the writing stability in low temperature environments deteriorates
Solution Approach 1:
The device is segmented into distinct functional modules: a temperature detection unit with temperature detection circuit, a control unit, and a storage chip. The temperature detection circuit includes separate components (temperature sensing element, signal processing circuit) that are integrated with the storage chip, allowing temperature monitoring without significantly increasing overall device complexity
Solution Approach 2:
The temperature detection unit serves multiple functions: it detects temperature, generates temperature signals, and provides input to the control unit for activation decisions. The control unit integrates both temperature-based activation control and power management functions, reducing the need for separate control circuits
3Productivity
If the storage chip is activated without temperature control, then the power consumption is reduced, but the write time in low temperature environments increases
Solution Approach 1:
The temperature detection unit operates before the storage chip activation to detect the temperature condition. The control unit uses this information to determine whether to activate the storage chip, preventing wasted power consumption on operations that would be slow and unstable in low-temperature conditions
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
The solution effectively shortens write time and enhances writing stability by ensuring the storage chip operates within a suitable temperature range, reducing the impact of low temperatures on memory performance.
Implementation Method 1
a temperature detection unit for detecting a temperature of the storage chip and outputting an analogue signal corresponding to the temperature
Data Source
AI summary
The present invention provides a semiconductor device comprising a storage chip and a temperature detection module for detecting a temperature of the storage chip. When the temperature detected by the temperature detection module reaches a set threshold, the storage chip is activated. The present invention utilizes the temperature detection module to detect the temperature of the storage chip so as to provide a reference for the activation and operation of the storage chip, avoiding the activation and operation of the storage chip under low temperatures, shortening write time, and improving the stability of the storage chip write; the temperature detection module has a simple circuit structure and is easy for implementation, with a small occupied area, exerting no influence on the active area of the storage chip.