Memory Zone Configuration for Density-Speed Trade-Offs
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Solution Overview
Problem
Existing memory systems lack efficient methods to manage zonal architectures, leading to suboptimal storage density and performance trade-offs, such as slower write and read times, and reduced endurance in zones with higher bit storage capacity.
Innovation Solution
A host system controls memory system zones by transmitting parameters to configure zones as SLC, MLC, TLC, or QLC, allowing dynamic adjustment of storage density and performance through commands and mappings, enabling flexible management of memory characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If zones are configured to store higher quantity of bits per cell (e.g., QLC), then storage density is improved, but write and read times increase and endurance decreases
Solution Approach 1:
The patent implements dynamic zone configuration where the memory system can switch between different bit-per-cell modes (SLC, MLC, TLC, QLC) based on operational requirements. The host system can issue commands to reconfigure zones between operations, allowing the system to adapt its performance characteristics in real-time rather than being fixed in a single mode.
Solution Approach 2:
The patent changes the operational parameters of memory cells by adjusting the quantity of bits stored per cell. The system receives commands from the host system that specify different bit quantities (1-bit, 2-bit, 3-bit, or 4-bit modes) and reconfigures the zones accordingly, thereby changing the fundamental storage parameter to optimize for either speed or density as needed.
2Quantity of substance
If zones are configured to store higher quantity of bits per cell (e.g., QLC), then storage density is improved, but endurance decreases
Solution Approach 1:
The system dynamically adjusts the bit-per-cell configuration based on endurance requirements. When high endurance is needed, the system reconfigures zones to SLC or MLC modes with fewer bits per cell. When maximum storage density is the priority and endurance is less critical, it switches to TLC or QLC modes with higher bits per cell.
Solution Approach 2:
The patent modifies the storage parameter of bits-per-cell to balance density and endurance. By receiving host commands that specify the desired bit quantity, the system reconfigures memory zones to operate in different modes, fundamentally changing the storage parameter to achieve the desired trade-off between capacity and reliability.
3Device complexity
If fixed zone configuration is used, then device complexity is reduced, but adaptability to different performance requirements decreases
Solution Approach 1:
The patent makes the memory system universal by enabling it to perform multiple functions through a single configurable architecture. The same physical memory zones can operate in different bit-per-cell modes (SLC, MLC, TLC, QLC) depending on the operational requirements, allowing the system to adapt to various performance and capacity needs without requiring separate dedicated hardware for each mode.
Solution Approach 2:
The system transitions from a static, fixed configuration to a dynamic, reconfigurable architecture. Zones can be reconfigured between different bit storage modes during operation based on host system commands, enabling the memory system to adapt its characteristics to match varying performance requirements while maintaining a relatively simple underlying hardware structure.
Data Source
AI summary
Methods, systems, and devices for techniques to configure zonal architectures of memory systems are described. In some cases, a host system may control characteristics of zones of a memory system. For example, the host system may transmit a command to the memory system to configure a zone according to a parameter. The parameter may indicate the quantity of bits per cell in memory cells within a zone. In some examples, the parameter may include one or more bits indicating the quantity. Upon receiving the command, the memory system may configure the zone in accordance with the parameter. In some examples, the memory system may provide a mapping to the host system indicating the quantity of addresses that a zone may store for each memory cell type.