M24LR series Dynamic NFC Tags

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The M24LR series offers a long-range RFID interface compatible with ISO 15693-capable NFC phones. It features an energy harvesting function that enables batteryless designs. It can be used in a wide variety of applications, including consumer electronics, computer peripherals, home appliances, industrial automation and healthcare products.

  • ISO 15693 tag RF interface
  • 400 kHz I²C serial interface operating from 1.8 to 5.5 V
  • EEPROM memory density from 4 Kbits to 64 Kbits
  • Energy harvesting
  • 32-bit password protection
  • RF WIP/busy output pin
  • Simple antenna design, backward compatible with M24SR series

New ST25DV-I2C series improves on M24LR dynamic NFC tags with new features

ST's new ST25DV-I2C series is an upgrade of our M24LR series of dynamic NFC tags. Offering a 13.56 MHz long-range interface compatible with NFC phones and readers, our new ST25DV-I2C dynamic NFC/RFID tags feature an innovative fast transfer mode, an I²C interface up to 1 MHz and an extended temperature range up to 125 °C.

Backward compatible with the M24LR series and designed for a simple antenna design, ST25DV-I2C dynamic tags are available in new packages including a 12-pin UFDFPN and a very thin 10-ball WLCSP.


eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.

NFC/RFID Calculators

Choose design tool:

NFC Inductance

Input geometry and substrate properties
Get antenna impedance

UHF Link Budget

Enter forward and reverse link characteristics
The tool returns link budget estimate

NFC Tuning Circuit

Enter antenna parameter and matching target
Select the topology of the matching network
The tool returns component values for the desired design targets