{"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-9xen","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":"2026-10-29T15:34:08.651Z","chip":{"id":"e6e039ba-7e0b-4cbc-b425-ac5318ffda9a","slug":"ucode-9xen","name":"UCODE 9xen","manufacturer":"NXP","frequency_category":"UHF 860–960 MHz","short_description":"UHF RFID IC for automotive and industrial applications with extended temperature range and enhanced reliability","manufacturer_url":"https://www.nxp.com/products/rfid/nfc/uhf/ucode-9xen:UCODE_9XEN","frequency":null,"protocol":null,"memory":null,"interface":null,"temp_range":null,"form_factor":null,"security":null,"use_cases":["automotive-immobilizer","asset-tracking","industrial-iot"],"engineering_brief":null,"enriched":false,"url_status":"ok","link_status":"invalid","last_checked":"2026-10-29T03:31:28.634+00:00","last_status_code":404,"last_content_type":"text/html","created_at":"2026-10-29T03:00:35.662037+00:00","manufacturer_id":"6daaf1cc-d0e6-40c7-aba0-a08b4c3493fe","chip_type":"tag_ic","dual_interface":false,"is_family_hub":false,"meta_description":"NXP UCODE 9xen UHF RFID IC for automotive and industrial applications. EPC Gen2 protocol, 860–960 MHz, extended temperature range, enhanced reliability. Designed for harsh environment asset tracking.","faq":null,"standards":["iso-18000-63-epc-gen2"],"alternatives":["db903593-5b3b-44fd-a051-0ac4e7df533b","8ba0a183-46ba-43f9-8014-ef945b05d984","c9ba6ad8-5491-4da0-890d-d7a9706fb6e8","56ed1649-180b-46f9-958a-937c67a14dd0","24fa9e2d-500a-4dbe-b69b-83195ac3ece4","6b34efa1-fd7c-43bd-b044-54c6b7c22b09","91557fc7-5568-4bfa-9c9b-b108b8352fe7","cf92716a-c0b9-46b8-abf1-83972dc76bb7","bdb7f55c-ad14-42b8-a96d-cb0907446d24","cb97a365-918b-48b4-9b97-9a7d7848b702","4cf564db-8810-4ca1-8580-b31ef2bdbc93","b5848562-36ca-45fa-846a-e17981fc0f4f","8de5da07-a0fe-45c9-8a9e-45c34369be6e","a1fc50b5-b408-467a-ab6c-e04cf0a5c1f6","6319b4aa-5204-4ddf-ad3f-e52297bb0f08","d2bc5060-7fdc-4e8a-b42d-13bbb272129e","3307e798-8571-46a4-955e-356d3eb3bb78"],"no_direct_competitor":false,"long_form_html":{"deployments":"<p>Potential application considerations for the UCODE 9xen include:</p><ul><li><a href=\"/applications/automotive-immobilizer\">Automotive Immobilizer</a> — extended temperature qualification supports under-hood and cabin-mount scenarios</li><li><a href=\"/applications/asset-tracking\">Asset Tracking</a> — reliability enhancements suited for returnable transport items and logistics containers</li><li><a href=\"/applications/industrial-iot\">Industrial IoT</a> — operational resilience in manufacturing line automation and equipment monitoring</li></ul><p>The automotive qualification suggests potential use in passive-entry passive-start (PEPS) ecosystems, tire-pressure monitoring system (TPMS) integration, or vehicle-inventory tracking — though implementers must validate specific OEM requirements against published qualification reports.</p>","buying_guide":"<p>When sourcing the UCODE 9xen, confirm with your <a href=\"/manufacturer/nxp\">NXP</a> representative or authorized supplier:</p><ul><li>Exact die/wafer or packaged part number (e.g., bump versus strap versus SOT variant differences)</li><li>Document revision of the product data sheet and qualification report applicable to the specific temperature grade</li><li>Automotive qualification status (AEC-Q100 or OEM-specific PPAP level if deploying in regulated automotive supply chains)</li><li>Packaging format: bare die, bumped wafer, or module assembly; minimum bond-pad pitch for direct-attach assembly</li><li>Mounting substrate and antenna matching requirements for your specific frequency sub-band operation</li><li>Sample validation protocol for write-sensitivity, read range, and retention across claimed temperature extremes</li><li>Long-term supply agreement terms given automotive program lifecycle requirements</li></ul><p>Compare against <a href=\"/chip/nxp-ucode-9\">NXP UCODE 9</a> base variant and <a href=\"/chip/ucode-9m\">UCODE 9m</a> to verify 9xen-specific enhancements justify any cost differential for your temperature/reliability targets.</p>","how_it_works":"<p>The <strong>NXP UCODE 9xen</strong> is a UHF RFID tag IC operating in the <strong>860–960 MHz</strong> frequency range, supporting all regional UHF sub-bands. It communicates via <a href=\"/standards/iso-18000-63-epc-gen2\">ISO/IEC 18000-63 (EPC Gen2)</a> protocol, using passive backscatter modulation where the IC modulates its antenna load to reflect RF energy back to the interrogator.</p><p>The EPC Gen2 protocol specifies:</p><ul><li><strong>Modulation:</strong> Reader-to-tag uses PIE (Pulse Interval Encoding); tag-to-reader uses FM0 baseband or Miller-encoded subcarrier</li><li><strong>Anti-collision:</strong> Adaptive Q-algorithm binary tree traversal for dense-reader environments</li><li><strong>Memory architecture:</strong> Four-bank partitioned memory (Reserved, EPC, TID, User) accessible via 32-bit boundary aligned reads</li></ul><p>The 9xen variant is specifically engineered for <em>automotive and industrial applications</em> with an <strong>extended temperature range</strong> and <strong>enhanced reliability</strong> compared to standard commercial-grade UCODE products.</p>","programming_notes":"<p><strong>Reader compatibility:</strong> Any EPC Gen2-compliant interrogator should communicate with the UCODE 9xen; verify extended temperature calibration if operation beyond commercial grade (typically −40 °C to +85 °C or wider) is required.</p><p><strong>Key command families per EPC Gen2:</strong></p><ul><li><code>SELECT</code> — filter inventory session</li><li><code>QUERY</code> — initiate inventory round with Q-parameter</li><li><code>QUERYADJUST</code>, <code>QUERYREPLY</code>, <code>ACK</code>, <code>NAK</code> — inventory handshake</li><li><code>REQ_RN</code> — obtain handle for secured access</li><li><code>READ</code>, <code>WRITE</code>, <code>KILL</code>, <code>LOCK</code>, <code>ACCESS</code>, <code>BLOCKWRITE</code>, <code>BLOCKERASE</code> — memory and security operations</li></ul><p><strong>Memory layout considerations:</strong> EPC Gen2 specifies four logical banks. TID bank contains NXP factory-locked identifier; EPC bank holds the programmed EPC code; User bank available for application data; Reserved bank for kill and access passwords. <strong>Pitfall:</strong> LOCK operations are irreversible without ACCESS password knowledge; permanent locking of kill password prevents future tag destruction.</p><p><strong>Security:</strong> Standard Gen2 password protection (32-bit access password, 32-bit kill password); no cryptographic authentication in base UCODE 9 architecture. For authenticated applications, evaluate <a href=\"/chip/ucode-dna\">UCODE DNA</a> or <a href=\"/chip/ucode-dna-city\">UCODE DNA City</a> variants with AES-128 or ECC engines.</p>"},"og_image_url":"https://rfid-datasheet.com/og/chip/ucode-9xen","canonical_url":"https://rfid-datasheet.com/chip/ucode-9xen"}}