A 57nW Software-Defined Always-On Wake-Up Chip for IoT Devices with Asynchronous Pipelined Event-Driven Architecture and Time-Shielding Level-Crossing ADC

📋 论文概要

本文提出一款57nW的软件定义始终在线唤醒芯片，采用异步流水线事件驱动架构，解决了IoT设备在随机稀疏事件场景中传统周期性唤醒功耗过高的问题。该芯片可软件配置以响应多种事件，实现超低功耗唤醒。

💡 主要创新点

• 提出软件定义的可配置唤醒机制，支持多种事件类型，提高灵活性。
• 采用异步流水线事件驱动架构，实现极低功耗（57nW）的始终在线工作。

🏷 关键词

📄 原文摘要

China 1 2 IoT devices usually operate in random-sparse-event scenarios (Fig. 20.2.1). To avoid missing events, traditionally a periodic-wake-up frequency [1] must be orders of magnitude higher than the average event rate, wasting huge power. An emerging event-driven approach seeks to trigger a power-hungry highperformance system (HPS) using an ultra-low-power wake-up circuit. State-of-the-art wake-up chips with DSP-based and neural-network-based feature extraction consume 12nW [2], 1μW [3], and 142nW [4]. However, they can only respond to dedicated voice/acoustic signal of low bandwidth. Another wake-up chip with 2.2μW power [5] shows potential for general purpose use, however, the pattern recognition technology is complicated and power hungry for many

👥 作者与机构

Zhixuan Wang1, Le Ye1,2, Hao Zhang1, Jiayoon Ru3, Haitao Fan2,

Yangyuan Wang1, Ru Huang1 Peking University, Beijing, China Advanced Institute of Information Technology of Peking University, Hangzhou, China 3 XINYI Information Technology, Shanghai,