Pipe Register Control Signal Generation Circuit for Semiconductor Timing
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Solution Overview
Problem
High-speed semiconductor operations require secure internal operation timing margins to maintain performance reliability, which is challenging due to the need for precise timing control of pipe registers in semiconductor apparatuses, especially under variations in process, voltage, and temperature (PVT) conditions.
Innovation Solution
A pipe register control signal generation circuit that includes a sense amplifier and a duplicate sense amplifier to simulate the sense amplifier, generating a pipe register control signal based on voltage differences, ensuring accurate timing coordination regardless of PVT variations, thereby improving operation timing characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the frequency of the external clock signal is increased to achieve high-speed operation, then the operation speed is improved, but the internal operation timing margin is reduced
Solution Approach 1:
The duplicate sense amplifier performs preliminary sensing operations on dummy local input/output lines to predict and generate the pipe register control signal in advance. This preliminary action ensures that the control signal is ready at the correct timing even when operating at high speeds, thereby maintaining the internal operation timing margin while achieving high-speed operation.
2Ease of operation
If the pipe register operates according to the output timing of the sense amplifier, then the timing control is simplified, but the timing accuracy is reduced due to PVT variations
Solution Approach 1:
The duplicate sense amplifier creates a copy of the sense amplifier's operation by performing the same sensing function on dummy local input/output lines. This copy generates the pipe register control signal with accurate timing that is immune to PVT variations, as the duplicate amplifier experiences the same environmental conditions and compensates for them automatically.
3Measurement precision
If a duplicate sense amplifier is added to generate the pipe register control signal, then the timing accuracy is improved, but the device complexity increases
Solution Approach 1:
The duplicate sense amplifier serves multiple functions: it generates the pipe register control signal with accurate timing, compensates for PVT variations, and maintains signal integrity throughout the operation. By making this component multi-functional, the patent reduces the need for additional separate circuits, thereby limiting the increase in device complexity while achieving improved timing accuracy.
Data Source
AI summary
A pipe register control signal generation circuit includes a sense amplifier configured to drive a global input/output line according to a result of sensing a voltage difference between a pair of local input/output lines according to a sense amplifier enable signal. The pipe register control signal generation circuit also includes a duplicate sense amplifier configured to simulate the sense amplifier and configured to generate a pipe register control signal according to a result of sensing a difference between a first voltage and a second voltage according to the sense amplifier enable signal.