ST25DV-I2C series dynamic NFC tags

Pictogram representing ST25-brand

The ST25DV-I2C series of Dynamic tags offers both an NFC/RFID contactless interface and an enhanced I²C wired interface for connecting to a host, such as a microcontroller or microprocessor.

What is the ST25DV-I2C series?

These NFC Forum Type 5 Dynamic tags operate in the high-frequency range (13.56 MHz). The data stored in tags can be accessed by any NFC smartphone or NFC/RFID HF professional reader, and also by an MCU, using the I2C wired link.

ST25 NFC Dynamic Tag brings wiresless connectivity to MCU

ST25DV-I2C tags offer rapid writing, fast transfer mode, enhanced I²C features, energy harvesting, low power mode, and password protection. Thanks to this rich feature set, these highly integrated and cost-effective tags are suitable for a wide range of applications.

Moreover, developers benefit from a complete ecosystem with evaluation boards, software tools, mobile app, and other resources to speed up application development.

ST25DV-I2C series is in the ST 10 year longevity program that ensures continuous supply for 10 years.


ST25DV-I2C series products are suitable for a broad range of applications in industrial or consumer domains.
Its rich feature set, including fast transfer mode (between NFC and I²C interfaces), NFC Forum type 5 support, highly reliable EEPROM memory, energy harvesting capabilities, and large package range ensure that the ST25DV-I2C series can meet various customer application needs.

Discover our portfolio

The ST25DV-I2C series comes in many packages, ranging from robust to ultrasmall solutions, with 4 to 64 kilobits of memory and several temperature grades.

Graph representing ST25DV-I2C series portfolio, featuring multiple packages from 4kbits to 64 kbits memory density


  • Allows batteryless or low-power operation
  • Improves user experience through NFC features and capabilities
  • Reduces complexity and time in some production processes
  • Enables in-the-field contactless maintenance in constrained environments (sealed products, difficult access, etc.)
  • Compatible with RFID reader and NFC mobile phone
  • Easy physical integration thanks to small packages
  • Support multiple use cases along a product lifetime from manufacturing to end user
Product lifecycle and use cases
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ST25DV-I2C series characteristics

  • ISO/IEC 15693 and NFC Forum type 5 tag contactless interface
  • 1MHz I²C serial interface operating from 1.8 to 5.5 V
  • EEPROM memory density from 4 to 64 Kbits
  • Endurance of 1M cycles
  • Data retention 40 years
Advanced features
  • Fast transfer mode thanks to 256-byte buffer
  • Enhanced features for I²C interface
  • Energy harvesting
  • 64-bit passwords protection
  • Low power mode
  • GPO interruption pin configurable on multiple RF events
  • 64-bit unique identifier
  • TSSOP8, SO-8
  • WLCSP10
Temperature ranges
  • Range 6:
    • From -40 to 85°C
  • Range 8:
    • From -40 to 105°C (UDFPN8 only)
    • From -40 to 125°C (SO8N and TSSOP8 only, 105°C max on RF interface)