The ST25TA-E devices are NFC/RFID tag ICs with solid security and privacy features.

The ST25TA-E devices hold a unique off-chip generated digital signature through TruST25 (a set of software and procedures) used to prove the origin of the chip UID in identification detection.

The ST25TA-E devices also generate on-chip digital signatures dynamically through Edge TruST25 services to prove the origin of the product in ownership detection and associated data. They also embed custom certificates for enrollment verification.

The Augmented NDEF feature is an automatic contextual NDEF message service that allows tags to react to dynamic content without user interaction.

The ST25TA-E devices have a configurable flash memory with 25 years of data retention and work with a 13.56 MHz short range RFID reader or an NFC phone.

The contactless interface is compliant with the ISO/IEC 14443 standard and NFC Forum Type 4 tag specification.

• All features
  • Includes state-of-the-art patented technology
  • Contactless interface
    • Compliant with ISO/IEC 14443 Type A
    • NFC Forum Type 4 tag certified by the NFC Forum
    • Up to 106 kbps data-rate
    • Internal tuning capacitance: 68 pF +/- 4 pF
  • Memory
    • Up to 2048 bits (256 bytes) of user flash memory
    • Support NDEF data structure
    • Data retention: 25 years
    • Minimum endurance: 500 k write cycles
    • Page erase time down to 0.8 ms
    • Chaining capability
    • Augmented NDEF (contextual automatic NDEF message)
    • 4-digit unique tap code
    • 24-bit general purpose counter with antitearing
  • Data protection
    • Permanent lock file protection for read/write access
    • 64-bit password-based file protection for read/write access with diagnosis and mitigation services.
  • Chip identification and protection
    • 7-byte unique identifier (UID)
    • TruST25 digital signature (off-chip ECDSA)
  • Product authentication and digitization
    • Up to 2-slot secure key storage
    • Edge TruST25 digital signature (on-chip ECDSA)
    • Compliant with blockchain-backed evidence of authenticity
  • Security features
    • SESIP level 1 certified, with Physical Attacker Resistance
    • Active shield and protection against state-of-the-art attacks
    • A unique serial number on each die
  • Privacy
    • Scalable NFC-enabled privacy modes
      • Kill mode and anonymous with untraceable UID (fixed or random ID)
      • Configurable kill mode for permanent deactivation of the tag