MLC Flash Memory Load Signal Programming Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional multi-level cell (MLC) flash memory devices require a higher number of operations to program data, increasing programming time due to the need to determine specific states based on read MSB and LSB data.
Innovation Solution
A memory device and method that includes buffers for receiving MSB and LSB data, generating load signals based on logic levels to control programming permissions, reducing the number of operations required for programming by using load signals to determine programming states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional MLC flash memory programming operations are used to determine specific states based on read MSB and LSB data, then data state determination is achieved, but programming time increases due to higher number of operations
Solution Approach 1:
The patent applies preliminary action by pre-determining programming permissions based on the relationship between MSB and LSB data before executing the programming operation. The control circuit generates programming permission signals in advance by comparing MSB and LSB values, allowing the system to prepare the programming state beforehand. This reduces the number of operations needed during the actual programming phase, thereby decreasing programming time while maintaining accurate data state determination.
2Measurement precision
If multiple read operations are performed to determine memory cell states, then accurate state identification is achieved, but the number of operations increases
Solution Approach 1:
The patent merges the functions of reading and determining programming permissions into a single integrated process. The control circuit simultaneously performs read operations on both MSB and LSB data and immediately uses this information to generate programming permission signals. By combining these operations rather than performing them separately, the system reduces the total number of operations required while maintaining accurate state identification, thereby improving programming efficiency.
3Adaptability or versatility
If conventional programming operations are used without load signals, then programming flexibility is maintained, but programming time increases due to more operations
Solution Approach 1:
The patent introduces programming permission signals as an intermediary mechanism between data reading and programming execution. These load signals act as mediators that automatically determine whether programming should proceed based on the relationship between MSB and LSB data. This intermediary layer maintains programming flexibility by allowing conditional programming decisions while reducing the number of operations needed, as the permission signals automatically handle the determination logic without requiring additional manual operations.
Data Source
AI summary
A memory device and method thereof are provided. The memory device may comprise a first buffer for receiving most significant bit (MSB) data and least significant bit (LSB) data to be stored within a memory cell; a second buffer for loading LSB data stored in the memory cell; and a data loader for generating at least one load signal based upon logic levels of the received MSB data in the first buffer and the loaded LSB data in the second buffer, the at least one load signal being configured to control programming permissions for the memory cell.