MIFARE Ultralight EV1
Enhanced Ultralight with counters and originality check
Full Specifications
| Manufacturer | NXP |
|---|---|
| Frequency Category | HF 13.56 MHz |
| Frequency | 13.56 MHz |
| Protocol | ISO/IEC 14443 Type A, NFC Forum Type 2 |
| Memory | MF0UL11: 384 bits user memory (640 bits total), MF0UL21: 1024 bits user memory (1312 bits total) |
| Interface | RF contactless (17 pF or 50 pF variants) |
| Temperature Range | -25°C to +70°C operating, -55°C to +125°C storage |
| Form Factor | Bare die (wafer on FFC, 75 µm or 120 µm, Au bumps), MOA8 contactless module (SOT500-4) |
| Security | 32-bit password protection, ECC-based originality signature, 3× 24-bit one-way counters, 32-bit OTP area, field-programmable read-only locking per page, optional password attempt limiting |
Engineering Brief
The MIFARE Ultralight EV1 (MF0ULx1) is NXP's enhanced ISO/IEC 14443-A ticketing IC succeeding the original Ultralight with backward compatibility. It features two memory variants (MF0UL11 with 384 bits user memory, MF0UL21 with 1024 bits), three independent 24-bit one-way counters with anti-tearing support, and ECC-based originality signature for silicon authenticity verification. Security includes optional 32-bit password protection with configurable write or read/write access control and negative authentication attempt limiting. Fast transaction times (<35 ms typical, <10 ms for counter operations), 10-year data retention, and 100,000 write cycles (1,000,000 for counters) make it ideal for disposable or limited-use contactless ticketing in public transport, events, and loyalty programs.
Typical Applications
- Public transportation single-trip and limited-use ticketing
- Event ticketing and day passes
- Loyalty cards and promotional applications
- NFC-enabled mobile ticketing
- Thin flexible card (TFC.0/TFC.1) implementations
- Contactless paper ticket replacement
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