Semiconductor Mode Input Control Signal Delay Circuit
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Solution Overview
Problem
Semiconductor devices face challenges in synchronizing the generation of mode input control signals and read input control signals during mode register operations, leading to inefficiencies and potential malfunctions due to timing discrepancies between cell data input and mode data input during read and write operations.
Innovation Solution
The semiconductor device incorporates a mode input control signal generation circuit that generates control pulses and delays them based on a restart signal, synchronizing with read strobe signals to ensure that mode input control signals and read input control signals are generated at the same or overlapping times, thereby controlling the mode delay period to align data inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the semiconductor device uses separate control signal generation for mode register operations and cell data operations, then the operations can be performed independently, but timing synchronization between mode input control signals and read input control signals becomes difficult to achieve
Solution Approach 1:
The patent introduces a control pulse as an intermediary signal that mediates between the mode register operation and cell data operation. The control pulse is generated by the control signal generation circuit and used to trigger both the mode input control signal and the read strobe signal, ensuring they are synchronized while allowing independent operation configurations.
Solution Approach 2:
The control signal generation circuit performs multiple functions: it generates the control pulse that triggers mode input control signals for mode register operations, generates read strobe signals for cell data operations, and adjusts timing delays dynamically. This multi-functionality enables both independent operation capability and timing synchronization without requiring separate dedicated circuits.
2Reliability
If the semiconductor device delays mode input control signals to synchronize with read input control signals, then timing alignment is improved, but the circuit complexity increases due to additional delay control mechanisms
Solution Approach 1:
The patent implements dynamic delay adjustment where the delay amount is not fixed but can be modified based on operational requirements. The control signal generation circuit dynamically adjusts the delay of mode input control signals using the control pulse timing as a reference, allowing flexible synchronization without requiring complex fixed delay structures for all possible timing scenarios.
Solution Approach 2:
The patent changes the timing parameter of the mode input control signal by introducing a variable delay mechanism controlled by the control pulse. Instead of using multiple fixed delay circuits, the system adjusts the delay parameter dynamically based on the control pulse timing, achieving timing alignment with read input control signals while minimizing circuit complexity.
3Ease of manufacture
If the semiconductor device uses fixed delay periods for control signals, then the circuit design is simpler, but timing flexibility is reduced when different operation speeds are required
Solution Approach 1:
The patent transforms the static fixed delay approach into a dynamic system where the control pulse timing can be adjusted based on operational requirements. The control signal generation circuit generates control pulses with adjustable timing characteristics, allowing the system to adapt to different operation speeds while maintaining a relatively simple circuit structure compared to implementing multiple fixed delay circuits for all possible timing scenarios.
Data Source
AI summary
A semiconductor device may include: a mode input control signal generation circuit configured to generate a control pulse when a mode control operation is performed, generate a mode input control signal by delaying the control pulse by a mode delay period, and control the mode delay period on the basis of a restart signal; a read strobe signal generation circuit configured to generate a read strobe signal on the basis of the control pulse; a read delay circuit configured to generate the read input control signal by delaying the read strobe signal by a read delay period; and a read pipe circuit configured to receive mode data on the basis of the mode input control signal, and receive cell data on the basis of the read input control signal.