Semiconductor Memory Row Column Decoder Segmentation
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Solution Overview
Problem
Current semiconductor memory apparatuses lack efficient mechanisms to selectively enable and disable row and column decoding signals based on multiple addresses and test multi-cell signals, which affects the ability to accurately select memory cells during read and write operations.
Innovation Solution
The semiconductor memory apparatus includes a row decoder and a column decoder that generate decoding signals based on row and column addresses, respectively, with test multi-cell signals (TMC_rs and TMC_cs) controlling the enabling of single or multiple decoding signals to select memory cells, utilizing logic gates and signal distribution circuits to manage signal levels and enable appropriate word and bit lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple row addresses and column addresses are used to select memory cells, then the precision of memory cell selection is improved, but the complexity of the decoding circuit increases
Solution Approach 1:
The address decoding function is segmented into row decoding and column decoding operations. The row decoder receives multiple row addresses (RADD0-RADD7) and generates row decoding signals (RD0-RD7) to select specific word lines, while the column decoder receives column addresses (CADD0-CADD7) and generates column decoding signals (CD0-CD7) to select specific bit lines. This segmentation allows precise memory cell selection through coordinated row and column addressing without requiring a single complex decoder circuit.
2Adaptability or versatility
If test multi-cell signals are used to enable or disable decoding signals, then the versatility of memory operation modes is improved, but the control circuit complexity increases
Solution Approach 1:
The decoding circuit incorporates dynamic control through test multi-cell signals (TMC_RS and TMC_CS) that can enable or disable decoding operations based on operational mode. During normal operations, the decoders function normally to select specific memory cells. During test operations, these signals dynamically adjust the decoding behavior to select multiple memory cells simultaneously, allowing the same hardware to adapt between different operational modes without requiring separate dedicated circuits for each mode.
Data Source
AI summary
A semiconductor memory apparatus may be provided. The semiconductor memory apparatus may include a row decoder configured to generate one or more row decoding signals based on a plurality of row addresses. The semiconductor memory apparatus may include a column decoder configured to generate one or more column decoding signals based on a plurality of column addresses.