Semiconductor Memory Bank Timing Control via Temperature Sensors
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Solution Overview
Problem
Temperature variations across different banks in semiconductor memory apparatuses cause changes in transistor response characteristics, leading to mismatched signal timings and potential mis-operation due to varying turn-on timings of transistors.
Innovation Solution
Incorporating temperature sensors to generate temperature voltages that adjust the timing of command signals, using a timing control block to delay or not delay command signals based on temperature voltage levels, ensuring synchronized operations across banks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If temperature variations occur in different banks, then transistor response characteristics change, but signal timing synchronization deteriorates
Solution Approach 1:
The patent implements feedback by using temperature sensors to detect temperature variations in each bank and using this information to adjust command signal timings. The timing control block receives temperature voltages from sensors and dynamically adjusts signal timing based on detected temperature differences, creating a closed-loop system that compensates for thermal effects.
Solution Approach 2:
The patent changes the timing parameter of command signals based on temperature conditions. The timing control block modifies signal timing parameters dynamically according to temperature voltage levels, allowing the system to adapt signal characteristics to compensate for temperature-induced transistor response variations.
2Reliability
If temperature increases, then transistor threshold voltage rises and turn-on timing delays, but if temperature decreases, then threshold voltage falls and turn-on timing advances, causing timing mismatch
Solution Approach 1:
The patent applies preliminary anti-action by pre-compensating for temperature effects before they cause timing mismatches. The timing control block adjusts command signal timings in advance based on detected temperature variations, counteracting the expected delay or advance in transistor turn-on timing before the actual operation occurs.
Solution Approach 2:
The system continuously monitors temperature and uses this feedback to adjust timing parameters, creating a dynamic compensation mechanism that maintains consistent transistor turn-on timing despite temperature fluctuations.
3Reliability
If different banks operate at different temperatures, then operation timings diverge, but signal transfer block expects synchronized input
Solution Approach 1:
The patent applies local quality by implementing individual temperature sensing and timing adjustment for each bank. Rather than using a uniform timing approach, the system tailors the timing of command signals to each specific bank's temperature conditions, allowing localized compensation for thermal variations.
Solution Approach 2:
The timing control block dynamically changes the timing parameters of command signals sent to different banks based on their respective temperature voltages, ensuring that each bank operates with appropriately adjusted timing to maintain synchronization at the signal transfer block.
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
This solution stabilizes signal input and output timings across banks, preventing signal mismatches and ensuring consistent operation of semiconductor memory apparatuses despite temperature variations.
Implementation Method 1
a temperature sensor configured to generate a temperature voltage of which voltage level is changed according to a temperature variation of the bank
Data Source
AI summary
A semiconductor memory apparatus includes a bank; a temperature sensor configured to generate a temperature voltage of which voltage level is changed according to a temperature variation of the bank; and a timing control block configured to control a timing of a signal to be inputted to the bank, according to the voltage level of the temperature voltage.