MIFARE DESFire Light vs ST25DV
MIFARE DESFire Light offers 640 bytes memory with AES-128 + LRP security, making it ideal for transit tickets, loyalty, micro-payment tokens. ST25DV provides 4-64 Kbit with 64-bit password + configurable areas security, suited for IoT sensors, smart labels, energy harvesting, BLE pairing.
MIFARE DESFire Light
ST25DV
MIFARE DESFire Light vs ST25DV
DESFire Light is a disposable transit ticket chip. ST25DV is a dual-interface IoT tag with I2C connectivity and energy harvesting. They serve different system architectures and application domains.
Overview
MIFARE DESFire Light: ISO 14443ISO 14443Standard for contactless smart cards at 13.56 MHz (Types A and B)View full →-4 (NFC-A subset), AES-128 + LRP, 640 bytes, single application, fixed file structure. Optimized for disposable transit and loyalty tickets.
ST25DV: ISO 15693ISO 15693Standard for vicinity-range smart cards, 1+ meter read rangeView full → (NFC-V), I2C interface, energy harvesting, 512 B – 8 KB, up to 4 configurable access areas with independent 64-bit passwords. Optimized for IoT sensor data bridging.
Key Differences
- Interface: DESFire Light is RF-only. ST25DV adds I2C for MCU integration.
- Protocol: DESFire Light uses ISO 14443-4 (NFC-A). ST25DV uses ISO 15693 (NFC-V).
- Security: DESFire Light provides AES-128 authenticationauthenticationIdentity verification of NFC tags/readers via passwords or cryptographyView full →/" class="text-cyan-600 dark:text-cyan-400 underline decoration-dotted decoration-cyan-300 dark:decoration-cyan-700 underline-offset-2 hover:decoration-solid transition-colors">mutual authenticationmutual authenticationTwo-way identity verification between reader and tagView full →. ST25DV provides 64-bit passwords — no mutual authentication.
- Energy harvesting: ST25DV can harvest RF energy to power external circuits. DESFire Light cannot.
- Memory: DESFire Light 640 bytes; ST25DV up to 8 KB.
- Architecture fit: DESFire Light is a card inlay chip for tickets. ST25DV is a PCB-mounted component for IoT devices.
Technical Comparison
| Parameter | MIFARE DESFire Light | ST25DV |
|---|---|---|
| Standard | ISO 14443-4 (NFC-A subset) | ISO 15693 (NFC-V) |
| Host interface | None | I2C |
| Memory | 640 bytes | 512 B – 8 KB |
| Read range | 0–10 cm | 0–100 cm |
| Energy harvesting | No | Yes |
| Security | AES-128, LRP | 64-bit password |
| Mutual authentication | Yes | No |
| Typical cost (volume) | $0.12–$0.28 | $0.50–$1.50 |
Verdict
Different application domains and system architectures. DESFire Light for AES-secured disposable transit tickets. ST25DV for IoT sensor nodes requiring MCU-to-NFC data bridging and optionally RF energy harvesting. Not substitutes.
अनुशंसा
Choose MIFARE DESFire Light when you need DESFire security in a cost-optimized package; choose ST25DV when you need dual-interface (NFC + I2C) with energy harvesting.