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Sensing Circuit Design Techniques for RRAM in Advanced CMOS Technology Nodes
Donglin Zhang1,2, Bo Peng3, Yulin Zhao1,2
1Key Laboratory of Microelectronic Devices Integrated Technology, Institute of Microelectronics of Chinese Academy of Sciences, Beijing 100029, China.
Micromachines
|August 27, 2021
Summary
Resistive random-access memory (RRAM) faces challenges in advanced nodes. Optimizing sensing schemes enhances RRAM performance for wider applications, enabling faster speeds and lower voltages.
Area of Science:
- Materials Science
- Electrical Engineering
- Computer Engineering
Background:
- Resistive random-access memory (RRAM) offers excellent nonvolatile memory properties, including fast read speeds and low operating voltage, making it suitable for specific applications.
- Shrinking technology nodes introduce significant performance degradation issues for RRAM devices.
- Optimization of sensing schemes is crucial to expand the application range of RRAM technology.
Purpose of the Study:
- To summarize the challenges RRAM faces in advanced technology nodes.
- To detail novel sensing scheme designs and optimization methodologies.
- To provide a reference for designing RRAM sensing schemes.
Main Methods:
- Summarization of RRAM issues in advanced technology nodes.
- Detailed analysis of reference schemes, sensing amplifier schemes, and bit line (BL)-enhancing schemes.
- Illustration of waveforms and results for clarity in design.
Main Results:
- Sensing schemes for RRAM are evolving towards higher speed and resolution.
- Optimization leads to lower power consumption and applicability in advanced nodes.
- Current RRAM technology reaches 14 nm nodes with a minimum operating voltage of 0.32 V and access times of a few nanoseconds.
Conclusions:
- Optimized sensing schemes are vital for overcoming RRAM performance limitations in advanced nodes.
- Recent advancements enable RRAM to achieve high performance at low voltages and small technology nodes.
- The study provides valuable insights for the future design of RRAM sensing schemes.
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