{"license":"Free for any use with attribution link to rfid-datasheet.com","citation":"RFID-Datasheet.com Chip Database — Roxtron","source":"https://rfid-datasheet.com/chip/ucode-9xm","methodology":"https://rfid-datasheet.com/methodology","data_notes":"Includes automated enrichment. Null means unknown; last_checked is link availability, not technical review. Manufacturer documents govern specifications.","generated_at":"2026-11-01T19:50:18.588Z","chip":{"id":"e7844a89-7888-4774-a53f-2d07fb6c359f","slug":"ucode-9xm","name":"UCODE 9xm","manufacturer":"NXP","frequency_category":"UHF 860–960 MHz","short_description":"Latest UCODE with large configurable user memory, industrial","manufacturer_url":"https://www.nxp.com/docs/en/data-sheet/SL3S1005.pdf","frequency":"840–960 MHz (UHF RAIN RFID)","protocol":"EPC Gen2v2.1 (ISO/IEC 18000-63)","memory":"Up to 496-bit EPC / Up to 752-bit user memory (configurable: 128-bit EPC + 752-bit user, 256-bit EPC + 624-bit user, or 496-bit EPC + 384-bit user); 96-bit TID (factory-locked with 48-bit unique serial number); 32-bit kill password; 32-bit access password","interface":"RF (contactless backscatter modulation)","temp_range":"-40°C to +85°C","form_factor":"Wafer: die on sawn 12\" 120 µm wafer with 10 µm polyimide spacer, large pads (RF1, RF2, TP1, TP2), plasma diced; die size 0.525 mm × 0.51 mm","security":"32-bit access password; 32-bit kill password; Memory Safeguard (ECC with 2-bit failure detection); Brand Identifier (16-bit customer-unique, factory-programmed, XOR-scrambled with RN16); Standardized Untraceable with read-range reduction; Blockpermalock (128-bit)","use_cases":["supply-chain","asset-tracking","industrial-iot","brand-protection"],"engineering_brief":"The UCODE 9xm (SL3S1005) is NXP's latest UHF RAIN RFID chip optimized for demanding industrial applications requiring both exceptional RF performance and large user memory. It features -24 dBm read sensitivity, -22 dBm write sensitivity, and customer-configurable EPC/User memory partitioning (up to 752-bit user memory). Key innovations include Self-Adjust for automated tag optimization, Dynamic backscatter for regulatory compliance, Brand Identifier for product authentication, and Memory Safeguard (ECC with error detection). The chip supports all mandatory and key optional EPC Gen2v2.1 commands (BlockWrite, Blockpermalock, Untraceable with range reduction, Access), operates from -40°C to +85°C, and is delivered on 12\" wafer with large pads enabling single-slit antenna design and robust assembly with 100k write endurance.","enriched":true,"url_status":"ok","link_status":"valid","last_checked":"2026-11-01T03:31:28.371+00:00","last_status_code":200,"last_content_type":"application/pdf","created_at":"2026-06-14T16:30:56.111445+00:00","manufacturer_id":"6daaf1cc-d0e6-40c7-aba0-a08b4c3493fe","chip_type":"tag_ic","dual_interface":false,"is_family_hub":false,"meta_description":"NXP UCODE 9xm (SL3S1005): UHF RAIN RFID tag IC with configurable memory up to 752-bit user / 496-bit EPC, EPC Gen2v2.1, -24 dBm sensitivity for industrial applications.","faq":[{"a":"The UCODE 9xm offers configurable EPC/User memory partitioning: 128-bit EPC + 752-bit user, 256-bit EPC + 624-bit user, or 496-bit EPC + 384-bit user. It also includes a 96-bit TID with 48-bit unique serial number, 32-bit access password, and 32-bit kill password.","q":"What memory configurations does the UCODE 9xm support?"},{"a":"The UCODE 9xm achieves -24 dBm read sensitivity and -22 dBm write sensitivity, enabling extended read ranges in UHF RAIN RFID applications operating at 840–960 MHz.","q":"What is the read sensitivity of the NXP UCODE 9xm?"},{"a":"Yes, the UCODE 9xm supports mandatory and key optional EPC Gen2v2.1 (ISO/IEC 18000-63) commands including BlockWrite, Blockpermalock, Untraceable with read-range reduction, and Access commands.","q":"Does the UCODE 9xm support EPC Gen2v2.1 optional commands?"},{"a":"Security features include 32-bit access and kill passwords, Memory Safeguard with ECC and 2-bit failure detection, 16-bit factory-programmed Brand Identifier (XOR-scrambled with RN16) for authentication, standardized Untraceable with range reduction, and 128-bit Blockpermalock.","q":"What security features does the UCODE 9xm have?"},{"a":"The UCODE 9xm operates reliably across an industrial temperature range of -40°C to +85°C, making it suitable for demanding environmental conditions.","q":"What is the operating temperature range for UCODE 9xm?"},{"a":"Self-Adjust is an automated tag optimization feature on the UCODE 9xm that enables simplified manufacturing and improved RF performance. It works in combination with Dynamic backscatter to ensure regulatory compliance across different regions.","q":"What is Self-Adjust on the UCODE 9xm chip?"}],"standards":["iso-18000-63-epc-gen2"],"alternatives":["91557fc7-5568-4bfa-9c9b-b108b8352fe7","8de5da07-a0fe-45c9-8a9e-45c34369be6e","b5848562-36ca-45fa-846a-e17981fc0f4f","22a4ab88-4087-4a87-a31a-066d187b5641"],"no_direct_competitor":false,"long_form_html":null,"og_image_url":null,"canonical_url":"https://rfid-datasheet.com/chip/ucode-9xm"}}