NTAG I²C Plus 2K: NFC Forum Type 2 Tag with I²C Interface


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Contactless and contact system

Contactless and contact system


Key features

  • Pass-through mode
    • Up to 40 kbit/s using 64 byte SRAM buffer
  • Energy harvesting
    • Up to 15 mW
    • Wake up host with field detect pin
  • Password protection
    • 32-bit password to restrict access to EEPROM and SRAM
  • Originality signature
    • 32-byte elliptic curve based originality signature to protect cloning

NFC interface

  • Interoperability
    • Fully ISO/IEC 14443 A compliant
    • Fully NFC Forum Type 2 Tag compliant
    • One to one backward compatible to NTAG I2C
  • Uniqueness
    • 7-byte Unique Identifier (according to ISO/IEC 14443-3)
    • GET_VERSION command for easy identification of chip type and supported features
    • 32-byte originality signature
  • ISO/IEC 14443 and NFC Forum Type 2 Tag features
    • Operating distance up to 100 mm
    • True anti-collision
    • 4-byte write operation in < 4.8 ms to EEPROM and < 0.8 ms to SRAM
    • 64-byte write operation (FAST_WRITE) in < 6.1ms to SRAM

I2C interface

  • Features
    • I2C target interface supports up to 400 kHz
    • 16-byte write operation in < 4.5 ms to EEPROM and < 0.4 ms to SRAM
    • This device may be used as standard I2C EEPROM or I2C SRAM


  • NFC Forum Type 2 Tag features
    • 7-byte Unique Identifier
    • One time programmable Capability Container
    • Read-only locking
  • Special features
    • Elliptic curve based originality signature
    • 32-bit password protection
    • Protected data can be safeguarded against a limited number of negative password authentication attempts
    • Access restriction from an I2C perspective
    • Pass-through and mirror mode operations may be password protected


  • Built-in memory
    • 1912 or 888-bytes freely available user memory area
    • 64-bytes SRAM
  • Specification
    • 20 years of data retention
    • 500.000 write cycles

Part numbers include: NT3H2111W0FHK, NT3H2111W0FT1, NT3H2111W0FTT, NT3H2211W0FT1, NT3H2211W0FTT.


Quick reference to our documentation types.

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2 hardware offerings


2 software files

Note: For better experience, software downloads are recommended on desktop.

Engineering Services

1 engineering service

To find a complete list of our partners that support this product, please see our Partner Marketplace.


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