Semiconductor Memory Control Logic Stabilization via Flip-Flop Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Semiconductor memory devices face challenges in maintaining high-speed and stable operation due to environmental influences and voltage differences between peripheral circuits and memory cell arrays.
Innovation Solution
A semiconductor memory device design incorporating a flip-flop-based control logic with pulse generation circuits for generating data output control pulses and strobe signals, which are synchronized with a clock signal to stabilize data output operations, minimizing environmental influences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the semiconductor memory device operates at high speed, then the productivity is improved, but the stability of operation deteriorates due to environmental influences and voltage differences
Solution Approach 1:
The patent employs feedback mechanisms through flip-flop circuits that sense voltage differences between peripheral circuits and memory cell arrays, then generate control pulses to compensate for these differences. The first pulse generation circuit generates a data output control pulse based on the second output signal (inverted first output signal) of the flip-flop, creating a feedback loop that stabilizes operation at high speeds by continuously adjusting to environmental variations
Solution Approach 2:
The patent changes operational parameters by generating control signals (data output control pulse and strobe signal) that are synchronized with clock signals. This parameter adjustment ensures that data output operations occur at optimal timing relative to the clock cycle, maintaining stability while operating at high speed. The control logic adjusts the timing parameters of data output based on the clock signal phase
2Reliability
If the control logic uses flip-flop-based pulse generation, then the stability is improved, but the device complexity increases
Solution Approach 1:
The flip-flop-based control logic serves multiple functions: it generates both the data output control pulse and the strobe signal from a single clock signal input. The same flip-flop circuitry that stabilizes data output also provides timing synchronization for memory operations. This multi-functionality reduces the need for separate control circuits, thereby limiting the increase in device complexity while maintaining stability
Solution Approach 2:
The patent merges the data output control pulse generation and strobe signal generation into a single control logic block that operates from one clock signal. Instead of using separate independent control circuits, the design combines these control functions into an integrated flip-flop-based logic unit, reducing overall device complexity while achieving stable operation
Data Source
AI summary
A semiconductor memory device includes an I/O circuit suitable for inputting and outputting data signals, and a control logic suitable for controlling the I/O circuit. The control logic includes a flip-flop suitable for operating in response to a dock signal, which is irrelevant to the data signals, and feed a first output signal back, a first pulse generation circuit suitable for generating a data output control pulse in response to a second output signal of the flip-flop which is an inverted signal of the first output signal, and a second circuit suitable for generating a strobe signal in response to the second output signal.