Semiconductor Integrated Circuit Transfer Circuit Noise Cancellation
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Solution Overview
Problem
Noise generated in semiconductor integrated circuits due to capacitive coupling between wirings affects data transfer efficiency in non-volatile memory systems, leading to increased data transfer times and potential errors.
Innovation Solution
The implementation of a semiconductor integrated circuit with a transfer circuit that controls data transfer between two data buses, allowing for bidirectional data transfer and using an inverter circuit to cancel out noise by inverting data signals, thereby reducing the impact of capacitive coupling noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If data is transferred through wirings in semiconductor integrated circuits, then data transfer is enabled, but noise is generated due to capacitive coupling between wirings
Solution Approach 1:
A transfer circuit is introduced as an intermediary component between sense amplifier units and data latches. This transfer circuit includes multiple data buses that act as mediators to transfer data signals, thereby reducing the direct capacitive coupling between wirings and the noise it generates during data transfer operations.
Solution Approach 2:
The data transfer path is segmented into multiple data buses within the transfer circuit. By dividing the data transfer into separate bus segments, the patent reduces the capacitive coupling effect between adjacent wirings, thereby minimizing noise generation while maintaining data transfer functionality.
2Reliability
If noise is reduced through inverter circuit, then data transfer accuracy is improved, but data transfer time increases
Solution Approach 1:
Inverter circuits are selectively applied only where necessary in the transfer circuit to cancel noise in specific data buses, rather than applying them uniformly throughout the entire data path. This partial application reduces the overall impact on data transfer time while still achieving noise reduction and improving data transfer accuracy in critical paths.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances data transfer speed and accuracy by reducing noise interference, allowing for faster and more reliable data transfer between sense amplifier units and data latches, thereby improving the overall performance of non-volatile memory systems.
Implementation Method 1
Noise is generated in the wirings due to the capacitive coupling between the wirings
Data Source
AI summary
A semiconductor integrated circuit includes a plurality of sense amplifier units including a first group of sense amplifier units and a second group of sense amplifier units, a first data bus, a second data bus, a transfer circuit between the first data bus and the second data bus, and a data latch connected to the second data bus and to the first data bus through the transfer circuit and the second data bus. Each sense amplifier unit is connected to one of the bit lines. The first data bus is connected to each of the sense amplifier units in the first group. The second data bus is connected to each of the sense amplifier units in the second group. The transfer circuit controls the transfer of data between the first data bus and the second data bus in both directions.