Semiconductor Memory Parameter Address Conversion Circuit
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Solution Overview
Problem
Semiconductor memory devices face challenges in managing parameters that change with each generation and command compatibility issues across different standards, leading to inefficiencies in operation and resource utilization.
Innovation Solution
A semiconductor memory device configuration that includes a parameter storage unit, command register, and converting circuit to adjust parameter addresses and commands between products or standards, allowing for flexible parameter allocation and standard compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If parameters are changed according to generation and commands are not matched among standards, then device functionality is maintained for each generation, but compatibility and ease of operation deteriorate
Solution Approach 1:
The patent introduces a converting circuit as an intermediary component between the command register and internal circuits. This converting circuit translates commands from different standards (ONFI, Toggle, etc.) into unified internal commands, and translates parameter addresses from different generations into unified internal addresses. This mediator approach maintains reliability for each generation while improving command compatibility across standards without requiring changes to the core internal circuitry.
2Manufacturing precision
If parameters are organized for each generation of semiconductor memory device, then manufacturing precision and device performance are improved, but device complexity increases
Solution Approach 1:
The patent extracts the complexity of parameter management by separating it into two distinct components: a converting circuit that handles address and command translation, and the internal circuits that execute operations. By taking out the translation function into a dedicated converting circuit, the patent maintains precise parameter organization for each generation while reducing the apparent complexity in the main control path. The converting circuit acts as a buffer that absorbs the complexity of generation-specific variations.
3Productivity
If various interface modes and standards are adopted to speed up operations, then productivity is improved, but command compatibility and ease of operation worsen
Solution Approach 1:
The converting circuit is designed with universal functionality to handle multiple interface modes (ONFI, Toggle, and others) and different generations of semiconductor memory devices. A single converting circuit implementation can translate commands and addresses across all these variations, allowing the system to benefit from high-speed operations in different standards without requiring separate command sets for each mode. This multi-functional approach maintains command uniformity from the user perspective while enabling high productivity through various optimized interface modes.
Data Source
AI summary
A semiconductor memory device is provided, including a memory cell array having a plurality of memory cells; an internal circuit having a function required in a storage operation of the memory cell array; a parameter storage unit configured to store a certain parameter and to have a storage place specified by a parameter address, the certain parameter designating an operation of the internal circuit; a command register configured to store a command instructing an operation of the internal circuit; and a converting circuit configured to adjust at least one of the parameter address and the command that differ between products or between standards to the internal circuit.


