NXP UCODE Nxm: More Memory, Stronger Security and Reliable RAIN RFID
NXP combines 880-bit flexible memory, advanced data protection, privacy functions and improved RF sensitivity in its UCODE Nxm chip for industrial traceability and product lifecycle management.
NXP Semiconductors is expanding the capabilities of RAIN RFID with UCODE Nxm, a high-memory tag IC designed for reliable item-level identification and data storage. The chip combines 880 bits of configurable memory with four integrated functions for brand authentication, data integrity, RF performance and privacy.
The technology targets applications in industrial manufacturing, pharmaceuticals, automotive supply chains and emerging Digital Product Passport (DPP) systems, where RFID tags increasingly need to carry more than a unique product identifier.
880 Bits of Memory for Item-Level Traceability
UCODE Nxm offers three memory configurations, allowing users to allocate 880 bits between the Electronic Product Code (EPC) and user memory:
128-bit EPC + 752-bit user memory: Industrial production data and work-in-progress tracking.
256-bit EPC + 624-bit user memory: Pharmaceutical batch information and expiry dates.
496-bit EPC + 384-bit user memory: Automotive traceability and product-specific internet links.
The configurations can be selected during encoding, enabling different applications without redesigning the underlying RFID chip.
Four Features for Trusted RFID Data
Brand Identifier provides a factory-programmed, permanently locked 16-bit brand identifier. Authorized operators can verify whether tags contain the expected brand-specific identifier, supporting anti-counterfeiting measures during production and distribution.
Memory Safeguard uses error-correcting code (ECC) to automatically correct single-bit memory errors. Double-bit errors are detected and flagged through an invalid EPC response, reducing the risk of corrupted identification data entering enterprise systems.
Self-Adjust dynamically adapts RF performance to environmental conditions. This helps maintain reliable reads when tagged products contain materials that affect antenna performance, including metals and liquids.
Untraceable enables privacy protection through standardized GS1 Gen2v2 commands. Operators can hide identifying information or reduce the effective reading range to approximately 10% of its normal distance, limiting unwanted identification after purchase.
Higher RF Sensitivity for Faster Encoding and Smaller Tags
Compared with UCODE 7xm, NXP has improved read sensitivity from -19 dBm to -24 dBm and write sensitivity from -12 dBm to -22 dBm.
These improvements represent approximately threefold higher read sensitivity and tenfold higher write sensitivity. The resulting 2 dB read/write sensitivity gap supports efficient encoding, while improved RF performance enables smaller inlay designs or more reliable identification under challenging conditions.
From Product Identification to Lifecycle Data
With UCODE Nxm, NXP addresses the growing need to store trusted information directly on products. Production status, batch information and references to digital records can remain accessible through the RFID tag, including in environments without immediate database connectivity.
The combination of configurable memory, integrated data protection and improved RF performance makes UCODE Nxm particularly relevant for automated manufacturing, regulated supply chains and DPP-related traceability applications.
Discover how UCODE Nxm can support your requirements for data integrity, reliable identification and secure product traceability.
Connect with James Goodland, Director of RAIN RFID Solutions at NXP Semiconductors to discuss your application, technical requirements and opportunities for implementing UCODE Nxm.
Learn more: James Goodland's NXP Blog Page