Semiconductor Auto-Precharge Circuit Using Divided Clocks
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Solution Overview
Problem
Semiconductor devices face challenges in efficiently performing auto-precharge operations without separate precharge commands, leading to inefficiencies in area and current consumption.
Innovation Solution
The semiconductor device incorporates an operation flag generation circuit and auto-precharge pulse generation circuit, utilizing divided clocks with various cycles to generate and align auto-precharge pulses, minimizing shift register usage and stabilizing pulse generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If auto-precharge operation is performed without separate precharge commands, then operational efficiency is improved, but area and current consumption increase
Solution Approach 1:
The patent segments the precharge operation into distinct phases: a first precharge phase using a first precharge command, and a second precharge phase using a second precharge command. This segmentation allows the system to perform precharge operations more efficiently by dividing the task into manageable parts, reducing overall current consumption while maintaining operational efficiency.
Solution Approach 2:
The patent implements dynamic control of precharge operations by adjusting the timing and sequencing of precharge commands based on operational requirements. The system dynamically determines when to issue first and second precharge commands, optimizing the balance between operational efficiency and current consumption based on real-time conditions.
2Productivity
If auto-precharge operation is performed without separate precharge commands, then operational efficiency is improved, but area consumption increases
Solution Approach 1:
The patent segments the precharge operation into distinct phases with separate precharge commands, allowing for more efficient use of circuit resources. By dividing the precharge function into manageable segments, the system reduces the overall area required for implementation while maintaining high operational efficiency.
Solution Approach 2:
The patent implements a universal precharge control mechanism that handles multiple precharge scenarios through a single integrated approach. The system uses a single precharge command structure that can accommodate different operational conditions, reducing the need for separate dedicated circuits and thereby minimizing area consumption while preserving operational efficiency.
Data Source
AI summary
A semiconductor device includes an operation flag generation circuit configured to generate an operation flag at a time when a flag period elapses from a time when an internal setting signal is generated to perform a write operation accompanied by an auto-precharge operation; and an auto-precharge pulse generation circuit configured to generate an auto-precharge pulse by shifting the operation flag by a pulse generation period set by a period code based on divided docks generated by dividing an internal dock.