Attopsemi’s I-fuse™ Memory Solution Now Qualified and Available on X-FAB’s 130nm RF-SOI Technology

7 OCTOBER 2020

X-FAB Silicon Foundries, the leading analog/mixed-signal and specialty foundry, together with Attopsemi, innovator of I-fuse™ one-time programmable (OTP) IP solutions, have entered into a collaboration to satisfy the memory requirements of 5G technology. The companies have announced successful qualification of Attopsemi’s I-fuse OTP memory in relation to X-FAB’s XR013 open-platform foundry 130nm RF-SOI technology. This qualification will allow customers to benefit from the incorporation of a compact (<0.2mm2 surface area) and robust OTP block into the core XR013 technology module, but without requiring additional or custom processing. Read operation is possible at both 2.5V and 1.8V for MIPI compatibility.

X-FAB’s XR013 is a feature rich, open-platform, 130nm technology that is optimized for RF applications. These include cellular infrastructure, Wi-Fi connectivity, automotive V2X communications, IoT, etc. The cooperation between Attopsemi and X-FAB presents greater scope for designers to integrate digital content with analog trimming or data storage into next generation deployments, such as 5G New Radio (NR). A key benefit of using Attopsemi I-fuse OTP memory on the XR013 RF platform is the flexibility with which RF products can address different regional market requirements via a single chip design (as different configurations can be stored). This will lead to project development cost savings, as well as facilitating inventory management.

“We’re very excited about the prospect of our I-fuse™ IP now being qualified for incorporation into the X-FAB XR013 process,” said Shine Chung, Chairman of Attopsemi. “We’re very pleased that our OTP was chosen by X-FAB’s customers for 5G applications. Thanks to the high reliability, high quality and fully testable IP, our I-fuse™ has been proven to meet X-FAB’s stringent demands in their advanced processes.”

“Close collaboration with Attopsemi has created a cost-effective OTP memory solution for our customers using XR013,” Dr. Greg U’Ren, Director of RF Technology at X-FAB, added. “This will be pivotal in enabling our customers to increase their on-chip functionality, giving them a strong foundation for further innovation and allowing the requirements of different geographic locations to be attended to.”

The qualified Attopsemi I-fuse OTP solution is available for clients from X-FAB’s customer portal “My X-FAB”.  For more information, please contact at X-FAB at


Leave a Reply

Your email address will not be published. Required fields are marked *

  • We use your personal data ONLY to respond to your comments/requests.
  • To receive responses that are appropriate to your requests, we may transfer your email address and your name to the author of the article.
  • For more information on our Privacy Policy and Personal Data Processing, please visit the page: Privacy Policy (GDPR) & Cookies.
  • If you have any questions or concerns regarding the way we process your personal data, you can contact our Data Protection Officer at:
  • Subscribe to our magazine newsletter