A 256b-Wordlength ReRAM-based TCAM with 1ns Search-Time and 14× Improvement in WordLength-EnergyEfficiency-Density Product using 2.5T1R cell

📋 论文概要

该论文提出了一种基于ReRAM的256位字长TCAM，实现了1纳秒的搜索时间，并在字长-能量效率-密度乘积上取得了14倍的提升，解决了传统SRAM基TCAM在面积、搜索能耗和待机功耗方面的瓶颈。

💡 主要创新点

• 采用ReRAM单元实现非易失性TCAM，显著减小单元面积并降低搜索能耗。
• 通过优化电路设计实现1ns的快速搜索时间，同时保持低功耗。
• 在字长、能量效率和密度之间取得14倍的乘积改进，适用于网络和大数据处理中的频繁搜索场景。

🏷 关键词

📄 原文摘要

Yen-Ning Chiang1, Hsiang-Jen Tsai3, Geng-Hau Yang3, Ya-Chin King1, Chrong Jung Lin1, Tien-Fu Chen3, Meng-Fan Chang1 National Tsing Hua University, Hsinchu, Taiwan, TSMC, Hsinchu, Taiwan, 3 National Chiao Tung University, Hsinchu, Taiwan 1 2 Ternary content-addressable memory (TCAM) is used in search engines for network and big-data processing [1]-[6]. Nonvolatile TCAM (nvTCAM) was developed to reduce cell area (A), search energy (ES), and standby power beyond what can be achieved using SRAM-based TCAM (sTCAM) [1]-[2]: particularly in applications with long idle times and frequent-search-few-write operations. nvTCAMs were previously designed using diode-4T2R (D4T2R) with STT-MTJ

👥 作者与机构

Chien-Chen Lin1,2, Jui-Yu Hung1, Wen-Zhang Lin1, Chieh-Pu Lo1,