Static Memory Cell Dynamic Voltage Adjustment
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Solution Overview
Problem
In nano-scale manufacturing processes, it is challenging to write bit data into static memory cells due to process parameter drift, making it difficult to achieve stable and fast data writing in integrated circuits.
Innovation Solution
A static memory cell design that includes a data latch circuit with coupled inverters and a voltage provider, which adjusts voltage values based on bit data to enhance data writing capability and maintain stability even with process parameter variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional static memory cell with fixed voltage is used, then the circuit structure is simple, but the data writing capability deteriorates under process parameter drift in nano-scale manufacturing
Solution Approach 1:
The patent implements dynamic voltage adjustment by introducing a voltage provider that modifies the power voltage supplied to the latch circuit based on detected process parameter drift. Instead of using fixed voltage, the system dynamically adapts the voltage level to compensate for manufacturing variations, thereby maintaining reliable data writing capability across different process conditions without requiring complex redesign of the entire circuit structure
Solution Approach 2:
The patent changes the electrical parameter (voltage) of the latch circuit to adapt to process drift. By adjusting the power voltage supplied to the inverters in the latch circuit, the system compensates for threshold voltage variations and other process parameter changes, ensuring stable data writing performance despite manufacturing variations in nano-scale processes
2Speed
If the power voltage is increased to improve writing speed, then the data writing speed improves, but the power consumption increases
Solution Approach 1:
The system dynamically adjusts the power voltage to the minimum necessary level for achieving reliable data writing. Rather than continuously operating at high voltage for maximum speed, the voltage provider modulates the voltage based on actual process conditions and writing requirements, thereby achieving fast writing when needed while reducing power consumption during normal operation or when process conditions are favorable
Solution Approach 2:
The patent optimizes the power voltage parameter to balance speed and power consumption. By precisely controlling the voltage level supplied to the latch circuit based on process drift detection, the system achieves sufficient writing speed for reliable operation without unnecessarily increasing power consumption, finding an optimal operating point that satisfies both performance and energy efficiency requirements
Data Source
AI summary
A static memory cell is provided. The static memory cell includes a data latch circuit and a voltage provider. The data latch circuit is configured to store a bit data. The data latch circuit has a first inverter and a second inverter, and the first inverter and the second inverter are coupled to each other. The first inverter and the second inverter respectively receive a first voltage and a second voltage as power voltages. The voltage provider provides the first voltage and the second voltage to the data latch circuit. When the bit data is written to the data latch circuit, the voltage provider adjusts a voltage value of one of the first and second voltages according to the bit data.