Memory Device Pipe Latch Control for High-Speed Data Output
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Solution Overview
Problem
High-speed data input/output operations in memory devices lead to increased error probabilities, deteriorating the reliability of these devices, necessitating improved data output path designs.
Innovation Solution
The memory device incorporates a page buffer group for reading normal data and a control logic for storing logic data, along with a pipe latch control unit that synchronizes data output with a read enable pipe signal, enabling normal data to be output at a double data rate and logic data at a single data rate, enhancing reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-speed data input/output operations are implemented, then productivity is improved, but reliability deteriorates due to increased error probabilities
Solution Approach 1:
The patent segments the data output path into separate dedicated paths for normal data and logic data. Normal data travels through page buffers and column decoders, while logic data travels through a separate control logic path. This segmentation allows each path to be optimized independently, maintaining high-speed performance while reducing errors through dedicated routing and synchronization mechanisms.
Solution Approach 2:
The patent implements preliminary synchronization actions by generating read enable pipe signals that precede and coordinate the output of normal data and logic data. These synchronization signals are prepared in advance to ensure that data is latched and output at the correct timing, preventing errors that would occur with unsynchronized high-speed operations.
2Device complexity
If normal data and logic data share the same data output path, then device complexity is reduced, but reliability deteriorates due to potential data confusion and errors
Solution Approach 1:
The patent divides the data output system into distinct segments: one path for normal data (through page buffers and column decoders) and another path for logic data (through control logic). This segmentation eliminates data confusion by ensuring that normal data and logic data are routed through separate channels, improving reliability while maintaining manageable complexity through modular design.
Solution Approach 2:
The patent introduces read enable pipe signals as intermediary synchronization mechanisms that coordinate between the separate data paths and the output interface. These intermediary signals ensure that data from either path is output at the correct timing without direct interference between the paths, maintaining reliability while allowing a unified output interface.
3Ease of operation
If data is output without synchronization control, then ease of operation is improved, but reliability deteriorates due to timing errors and data corruption
Solution Approach 1:
The patent implements periodic synchronization using read enable pipe signals that are generated at regular intervals corresponding to the data output timing. These periodic synchronization pulses ensure that data is latched and output at predetermined moments, preventing timing errors while maintaining a simple operational interface through automatic synchronization.
Solution Approach 2:
The patent employs feedback mechanisms where the read enable pipe signals are generated based on the state of the data output path and previous operations. This feedback ensures that synchronization is maintained dynamically, adjusting to the actual data ready status while providing reliable timing control without requiring complex external coordination.
Data Source
AI summary
A memory device includes a page buffer group configured to read normal data stored in a memory cell array, a control logic configured to store logic data, and a pipe latch control unit configured to latch the normal data outputted from the page buffer group in synchronization with a read enable pipe signal and latch the logic data outputted from the control logic in synchronization with the read enable pipe signal.