Dec. 03, 2025 –
Hsinchu, Taiwan – December 3, 2025 -- Attopsemi today announced that its ultra-low energy program/read I-fuse® OTP technology has been adopted by ambient IoT pioneer Wiliot for use in its IoT Pixels™ – battery-free, stamp-sized sensors that harvest energy from ambient radio waves. These self-powered tags attached to products, packages, and pallets to provide real-time, item-level intelligence, helping global brands digitizing supply chains with new levels of transparency, efficiency, and responsiveness.
Wiliot’s IoT Pixels have been adopted on 22nm FD-SOI platform, incorporating Attopsemi’s I-fuse® one-time programmable (OTP) technology. I-fuse® delivers ultra-low read voltages – down to 0.54V – and is optimized for minimal area and extremely low leakage during operation.
“We’re very honored to have Wiliot adapting our I-fuse® OTP technology in their IoT products. We provided the best features of merits in OTP: small size, low program/read voltage, low program/read current, 1,000x reliability, wide temperature operation than any other competing OTP IP,” said Shine Chung, Chairman of Attopsemi. “In fact, our I-fuse® OTP behaves like a TRUE logic device, not a conventional NVM device any more.
Attopsemi’s I-fuse® OTPs are based on a pure logic process, making them highly customizable for target markets. They are compatible with a wide range of CMOS technologies – from 0.6µm planar to FinFET, GAA and beyond – including general-purpose (G), low-power (LP), ultra-low-power (ULP), mixed-signal, high-voltage, BCD, and FD-SOI platforms.
Attopsemi’s I-fuse® is a revolutionary “non-breaking” fuse technology that can be programmed below thermal runaway and above electro-migration (EM) threshold – while also solving for OTP testability. On the contrary, the competing OTP technology, either eFuse or anti-fuse, are programmed based on high current or voltage to cause breaking, respectively. As a result, the programmed outcomes are hard to control to cause very severe reliability problems.
“Integrating Attopsemi’s I-fuse® OTP into our IoT Pixels allowed us to meet the demanding requirements of large-scale ambient IoT deployments – combining ultra-low power consumption, minimal silicon area, and high reliability,” said Julien Bellanger, President of Wiliot. “This collaboration supports our mission to make every product in the global supply chain intelligent and internet-connected, while maintaining the scalability and cost-efficiency our customers depend on.”
Wiliot IoT Pixels are battery-free, stamp-sized sensor tags powered by ambient radio frequencies like Wi-Fi and Bluetooth. They integrate an RISC-V Processor, BLE radio, and multiple sensors – including location, temperature, humidity, and motion – all secured with 128-bit AES encryption. Designed for scalable deployment, it enables real-time, cloud-connected visibility at a fraction of the cost of traditional IoT devices.
Attopsemi Technology is a revolutionary OTP intellectual property (IP) provider located in Hsinchu, Taiwan. Since founded in 2010, the company has dedicated itself to developing and licensing fuse-based OTP IP for all CMOS processes, including HKMG, FDSOI and FinFET technologies. Attopsemi provides the best possible OTP solutions for all merits in small size, low voltage/current programming/read, high quality, high reliability, low power, high speed, wide temperature and high data security. Attopsemi's proprietary I-fuse® OTP technologies have been proven in CMOS and other technologies from 0.6um to 12nm in numerous foundries worldwide, and have been adopted by many customers in automotive, IoT, PMIC, sensor, and other application fields. For more solution, please visit https://www.attopsemi.com/