研究目的
To develop 28 nm embedded split-gate MONOS (SG-MONOS) ?ash macros that increase memory capacity embedded in micro controller units and improve performance over a wide junction temperature range from C to 170 C for automotive applications.
研究成果
The 28 nm embedded SG-MONOS flash macros successfully meet automotive requirements with high performance, reliability, and low EMI noise. Key achievements include 200 MHz random read access, 2.0 MB/s write throughput, and significant improvements in TDDB lifetime and EMI noise reduction. The technology demonstrates high scalability and suitability for upcoming automotive applications.
研究不足
The study is focused on automotive applications, and the findings may not be directly applicable to other sectors without further research. The process shrinkage to 28 nm presents challenges in balancing logic CMOS transistor performance and memory cell reliability.
1:Experimental Design and Method Selection:
The study focuses on developing SG-MONOS flash macros with temperature-adjusted word-line overdrive scheme, temperature-adaptive step pulse erase control (TASPEC), source-side injection (SSI) program with negative back-bias voltage, and spread spectrum clock generation for charge pump clock generation.
2:Sample Selection and Data Sources:
The research utilizes 28 nm embedded SG-MONOS flash macros, including code flash macros and data flash macros.
3:List of Experimental Equipment and Materials:
The study involves the use of SG-MONOS memory cells, charge pump circuits, and logic CMOS transistors.
4:Experimental Procedures and Operational Workflow:
The methodology includes implementing temperature-adjusted WL voltage overdrive, TASPEC for erase operations, SSI program with negative back-bias for write operations, and techniques to suppress EMI noise during charge pump operations.
5:Data Analysis Methods:
The performance and reliability of the flash macros are evaluated through measurements of read and write throughput, TDDB lifetime, and EMI noise reduction.
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