{"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/mifare-classic-ev1-1k","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":"2026-11-01T19:52:43.094Z","chip":{"id":"14771573-fe2a-41c3-afda-ee8bce015854","slug":"mifare-classic-ev1-1k","name":"MIFARE Classic EV1 1K","manufacturer":"NXP","frequency_category":"HF 13.56 MHz","short_description":"1KB ISO 14443A, legacy ticketing and access","manufacturer_url":"https://www.nxp.com/docs/en/data-sheet/MF1S50YYX_V1.pdf","frequency":"13.56 MHz","protocol":"ISO/IEC 14443 Type A","memory":"1024 bytes EEPROM (1 KB) organized in 16 sectors of 4 blocks, 16 bytes per block","interface":"RF contactless (two antenna coil connections LA/LB), no contact interface","temp_range":"-25°C to +70°C ambient operating temperature","form_factor":"Bumped die on sawn wafer (8 inch 120 μm or 75 μm, 12 inch 120 μm), MOA4 module (SOT500-2), MOA8 module (SOT500-4)","security":"CRYPTO1 stream cipher for authentication and encryption, mutual three-pass authentication (ISO/IEC DIS 9798-2), two keys per sector, 7-byte UID or 4-byte NUID, random ID support, NXP originality check support","use_cases":["payments-transit","access-control","asset-tracking"],"engineering_brief":"The MIFARE Classic EV1 1K (MF1S50YYX_V1) is NXP's mainstream contactless smart card IC operating at 13.56 MHz with ISO/IEC 14443 Type A compliance. It features 1 KB EEPROM organized in 16 sectors with user-definable access conditions per block, supporting fast ticketing transactions under 100 ms. Security is provided via CRYPTO1 cipher with mutual three-pass authentication, two keys per sector, and optional 7-byte UID or 4-byte NUID. Delivery options include bumped wafers (8/12 inch), MOA4, and MOA8 contactless modules with 10-year data retention and 200,000 write cycles, designed for public transport, access control, parking, and loyalty applications.","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 MIFARE Classic EV1 1K: 13.56 MHz ISO/IEC 14443A contactless IC with 1 KB EEPROM, CRYPTO1 security, for transit ticketing, access control, and loyalty.","faq":[{"a":"The MIFARE Classic EV1 1K has 1024 bytes (1 KB) of EEPROM organized into 16 sectors, each containing 4 blocks of 16 bytes. This provides user-configurable storage for ticketing, access credentials, or loyalty data.","q":"How much memory does the MIFARE Classic EV1 1K have?"},{"a":"The MIFARE Classic EV1 1K is an improved version offering NXP originality check support, random ID feature, optional 7-byte UID or 4-byte NUID, and enhanced delivery formats. It maintains backward compatibility with legacy MIFARE Classic 1K systems while adding anti-counterfeiting features.","q":"What is the difference between MIFARE Classic 1K and EV1 1K?"},{"a":"Yes, the MIFARE Classic EV1 1K fully complies with ISO/IEC 14443 Type A for the RF interface and anti-collision protocol, operating at 13.56 MHz. It works with standard ISO 14443A readers and NFC-enabled devices supporting MIFARE.","q":"Is MIFARE Classic EV1 compatible with ISO 14443A readers?"},{"a":"The MIFARE Classic EV1 1K supports 200,000 write/erase cycles with 10-year data retention. This endurance makes it suitable for reusable ticketing and access applications with frequent credential updates.","q":"How many write cycles does MIFARE Classic EV1 support?"},{"a":"MIFARE Classic EV1 uses CRYPTO1 stream cipher with mutual three-pass authentication based on ISO/IEC DIS 9798-2. Each sector has two independent keys (A and B) with user-definable access conditions per block, though CRYPTO1 is considered legacy encryption.","q":"What security does MIFARE Classic EV1 use?"},{"a":"MIFARE Classic EV1 1K supports fast ticketing transactions under 100 milliseconds, including RF activation, authentication, and data read/write operations. This speed makes it ideal for high-throughput transit gates and access points.","q":"What is the typical transaction time for MIFARE Classic EV1?"}],"standards":["iso-14443a"],"alternatives":["91c3a16f-2085-4f7a-898e-0c1b3113ba23"],"no_direct_competitor":false,"long_form_html":null,"og_image_url":null,"canonical_url":"https://rfid-datasheet.com/chip/mifare-classic-ev1-1k"}}