Precharge Control Device for Semiconductor Memory Banks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing semiconductor memory devices require multiple auto-precharge control circuits for each bank, leading to increased size and space occupation as the number of banks increases, due to individual bank precharging operations.
Innovation Solution
A precharge control device that includes a pulse generator, bank address controller, and precharge signal generator, allowing multiple banks to share a single precharge control circuit, generating precharge signals in response to write and read burst end signals to control precharge operations, thereby reducing the overall size of the precharge control circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each bank has its own auto-precharge control circuit, then precharge operation reliability is improved, but device size and space occupation increase
Solution Approach 1:
The patent merges multiple separate auto-precharge control circuits into a single shared control circuit that serves multiple banks. The precharge control circuit generates precharge signals that are distributed to different banks through a bank address selection mechanism, eliminating the need for dedicated control circuits in each bank while maintaining functional reliability.
Solution Approach 2:
The precharge control circuit is designed with multi-functionality to serve multiple banks. By incorporating a bank address controller that selects which bank receives the precharge signal based on address information, a single circuit performs the precharge control function for all banks, achieving universal applicability across different bank units.
2Manufacturing precision
If each bank has its own auto-precharge control circuit, then precharge control precision is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple control circuits into one shared precharge control circuit that uses bank address information to selectively control different banks. This merging approach reduces the total number of circuits while maintaining precise control over each bank's precharge operation through address-based selection.
Solution Approach 2:
The bank address controller acts as an intermediary between the shared precharge control circuit and the multiple banks. It receives bank address information and directs the precharge signal to the appropriate bank, enabling precise control without requiring dedicated control circuits for each bank.
Data Source
AI summary
A precharge control device includes a pulse generator, a bank address controller, and a precharge signal generator. The pulse generator generates a write precharge signal in response to a write burst end signal activated after a write burst operation and a read precharge signal in response to a read burst end signal activated after a read burst operation. The bank address controller generates a write address and a read address designating an address for the precharge operation in response to a write bank address and a read bank address. The precharge signal generator generates a precharge signal for performing the precharge operation in a bank selected in response to the write address when the write precharge signal is activated, or generates a precharge signal for performing the precharge operation in a bank selected in response to the read address when the read precharge signal is activated.