Semiconductor Memory Device Voltage Adjustment Circuit
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Solution Overview
Problem
Current semiconductor memory devices face challenges in efficiently latching data at high speeds due to limitations in voltage management during data transmission, leading to potential malfunctions and errors.
Innovation Solution
The implementation of a partial latch circuit with a voltage adjustment circuit that dynamically adjusts node voltages based on signal levels, ensuring stable H-level and L-level voltages within the latch circuit, even during short signal transition periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data transmission speed is increased, then productivity is improved, but reliability deteriorates due to voltage instability during signal transitions
Solution Approach 1:
The patent implements dynamic voltage adjustment in the latch circuit by introducing a voltage adjustment circuit that monitors signal transition states and automatically adjusts node voltages in real-time. This allows the latch circuit to maintain stable operation during high-speed data transmission, resolving the contradiction between speed and reliability by making the voltage management adaptive rather than static
Solution Approach 2:
The patent changes the voltage parameter dynamically during data transmission by adjusting node voltages based on signal transition states. The voltage adjustment circuit modifies voltage levels in response to detected transition conditions, enabling the system to maintain reliability while operating at higher speeds through parameter adaptation
2Reliability
If voltage adjustment is added to maintain stable voltages during transitions, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent introduces a voltage adjustment circuit as an intermediary component between the data input signal and the latch circuit. This intermediary monitors signal transitions and provides appropriate voltage levels to the latch circuit nodes, achieving voltage stability without requiring fundamental redesign of the core latch functionality
Solution Approach 2:
The voltage adjustment circuit performs preliminary voltage preparation before the latch circuit processes the data signal. By detecting transition states in advance and adjusting voltages proactively, the system prevents voltage instability issues before they affect data latching, reducing the need for complex corrective mechanisms
Data Source
AI summary
A semiconductor memory device includes a memory cell array having a memory cell; a data signal terminal configured to receive data to be written into the memory cell from an exterior of the semiconductor memory device and to output data read from the memory cell to the exterior of the semiconductor memory, and a timing signal terminal configured to receive a timing control signal. An interface circuit includes a first comparator having a first input terminal connected to the data signal terminal, a second input terminal connected to a reference voltage, and an output terminal. A plurality of first inverters are connected in series, an input terminal of a first stage one of the first inverters being connected to the output terminal first of the first comparator. A first switch circuit has a first terminal connected to an output terminal of a final stage one of the first inverters and a second terminal; a second inverter having an input terminal connected to the second terminal of the first switch and an output terminal connected to the second terminal of the first switch; and a first latch circuit connected to the second terminal of the first switch.