Semiconductor Command Generation Circuit Synchronization
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Solution Overview
Problem
Semiconductor systems face challenges in increasing storage capacity, particularly in generating internal commands and chip selection signals synchronously with clock signals to effectively activate operations within semiconductor modules.
Innovation Solution
Incorporating a latch circuit and command generation circuits that generate internal control and chip selection signals in synchronization with internal and inverted clock signals to produce normal and control commands, enabling efficient operation of semiconductor devices and modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple semiconductor devices are employed to increase storage capacity, then the storage capacity of the semiconductor system is improved, but the complexity of generating and synchronizing internal commands and chip selection signals increases
Solution Approach 1:
The command generation circuit is divided into multiple independent circuits (first command generation circuit, second command generation circuit, etc.), each responsible for generating commands for specific semiconductor devices. This segmentation allows parallel operation and reduces the complexity of centralized command generation while supporting multiple devices.
Solution Approach 2:
The circuit employs dual clock signals (inverted internal clock signal and internal clock signal) to dynamically control the timing of internal control signals and chip selection signals. This dynamic timing mechanism enables precise synchronization across multiple semiconductor devices, allowing the system to scale while maintaining coordinated operation.
2Productivity
If internal control signals and chip selection signals are generated in synchronization with clock signals, then the operational efficiency of semiconductor devices is improved, but the difficulty of detecting and measuring signal timing increases
Solution Approach 1:
The circuit uses periodic clock signals (inverted internal clock signal and internal clock signal) to generate internal control signals and chip selection signals at regular intervals. This periodic action creates predictable timing patterns that improve operational efficiency while making signal timing easier to detect and measure through the consistent relationship between clock cycles and generated signals.
Solution Approach 2:
The latch circuit receives feedback regarding the timing and state of internal control signals, using this information to properly synchronize chip selection signals with the clock signals. This feedback mechanism ensures accurate timing relationships are maintained, improving operational efficiency while providing measurable reference points for timing detection.
3Ease of operation
If a latch circuit generates internal control signals and chip selection signals, then the ability to activate operations within semiconductor modules is improved, but the device complexity increases
Solution Approach 1:
The latch circuit is designed to perform multiple functions: generating internal control signals, generating chip selection signals, and synchronizing these signals with clock signals. This multi-functionality consolidates what would otherwise require separate circuits, improving operation activation capability while minimizing the increase in overall device complexity.
Solution Approach 2:
The latch circuit prepares and latches internal control signals in advance based on the inverted internal clock signal, so that when the internal clock signal occurs, the properly timed chip selection signals are already ready to activate semiconductor device operations. This preliminary action simplifies the activation process while the modular latch structure keeps complexity manageable.
Data Source
AI summary
A semiconductor device includes a latch circuit and a first command generation circuit. The latch circuit generates a first internal control signal and a first internal chip selection signal in synchronization with an internal clock signal. The first command generation circuit generates a first normal command if the first internal chip selection signal having an enabled state is inputted in synchronization with an inverted internal clock signal. The first command generation circuit also generates a first control command if the first internal control signal having a second predetermined state is inputted in synchronization with the inverted internal clock signal.