MIFARE DESFire

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More general info on the MIFARE page.

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(old) MIFARE DESFire

NFC Forum Type 4 Tag 1.0

Old specification for NFC Forum Type 4 Tag allowed to use DESFire but newer version of the specification needs to use MIFARE DESFire EV1. Most NFC-compliant devices recognize MIFARE DESFire -based Tags but support cannot be guarantee for all NFC devices.

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MIFARE DESFire EV1

Memory

  • DESFire EV1 8k has an EEPROM of 8192 bytes, of which 7936 are free for user
  • DESFire EV1 4k has an EEPROM of 5088 bytes, of which 4864 are free for user
  • DESFire EV1 2k has an EEPROM of 2528 bytes, of which 2304 are free for user

NFC Forum Type 4 Tag 2.0

From NFC Forum: Type 4 Tag is fully compatible with the ISO/IEC 14443 standard series. Tags are pre-configured at manufacture to be either read and re-writable, or read-only. The memory availability is variable, up to 32 KBytes per service; the communication interface is either Type A or Type B compliant.
NXP AN11004 (pdf) describes how to use a DESFire as Type 4 Tag.

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