Memory Strobe Signal Delay Adjustment for Power Optimization
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Solution Overview
Problem
As memory density and complexity increase, the length and number of data lines in memories lead to unnecessary power consumption due to delayed sensing by sense amplifiers, which is not optimized for sections closer to the sense amplifier, resulting in excessive power usage.
Innovation Solution
The timing of data strobe signals is adjusted based on the address of memory sections, with closer sections receiving the strobe signal sooner and farther sections receiving it later, matching the delay to the time required for the lines to reach signal levels that can be accurately sensed by the sense amplifier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a worst case delay is implemented to ensure accurate sensing for the furthest section, then sensing accuracy is improved, but power consumption increases due to unnecessary extended driving time for closer sections
Solution Approach 1:
The patent applies local quality by providing different delay times to different memory sections based on their distance from the sense amplifier. Closer sections receive shorter delays while farther sections receive longer delays, optimizing both sensing accuracy and power consumption for each local region rather than applying a uniform worst-case delay to all sections.
Solution Approach 2:
The patent implements dynamics by making the delay time adjustable and adaptable based on the specific memory section being accessed. The system dynamically selects appropriate delay values from multiple available delay stages, allowing the sensing timing to be optimized for each particular access pattern and section distance.
2Quantity of substance
If memory density and complexity increase to accommodate more storage, then storage capacity is improved, but data line length increases causing greater delay variations and power consumption
Solution Approach 1:
As memory density increases and data lines become longer, the patent applies local quality by segmenting the memory into sections with different delay characteristics. Each section receives a delay tailored to its specific distance from the sense amplifier, preventing uniform over-delaying that would waste power across the entire high-density memory structure.
Solution Approach 2:
The patent segments the memory structure into multiple sections with different delay requirements. This segmentation allows the system to handle increased memory density by treating each segment independently with appropriate timing, rather than forcing a single delay value across the entire expanded memory structure.
Data Source
AI summary
Methods and apparatuses for adjusting data strobe signals are disclosed. An example apparatus may include a control circuit that is configured to receive an address and a strobe signal. The control circuit may further be configured to delay the strobe signal based, at least in part on the address to provide a delayed strobe signal. The example apparatus may further include a sense amplification circuit coupled to the control circuit. The sense amplification circuit may be configured to sense signals responsive, at least in part, to receipt of the delayed strobe signal.


