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ST25DV Series Dynamic NFC Tags


The ST25DV series of dynamic NFC/RFID tags offers a 13.56 MHz long-range interface compatible with NFC phones and readers.

Based on an ISO/IEC 15693 and NFC Forum Type 5 tag, ST25DV tag ICs can be operated from an RFID reader or an NFC phone. They also include an I²C interface that lets them connect to a host (MCU, MPU, etc.).

These tags feature an innovative fast transfer mode between an embedded host and an NFC phone or reader thanks to their half-duplex 256-byte buffer.

ST25DV dynamic NFC/RFID tags can be used in a wide variety of applications including consumer electronics, industrial, metering, electronic shelf labels, IoT objects and more.


  • ISO/IEC 15693 and NFC Forum Type 5 tag contactless interface
  • 1-MHz I²C serial interface operating from 1.8 to 5.5 V
  • EEPROM memory density from 4 to 64 Kbits
  • Fast Transfer mode thanks to 256-byte buffer
  • Energy harvesting feature
  • 64-bit password protection
  • GPO interruption pin configurable on multiple RF events
  • Simple antenna design, backward compatible with M24LR series

M24SR Series Dynamic NFC Tags

Part Number Contactless RF Interface User Memory Capacity (b) Serial Interface Password protection Clock Frequency(MHz)max Operating Range Distance (m) typ Info
ST25DV04K ISO14443 2048 I2C 128-bit 1 0.1 Detail
ST25DV16K ISO14443 4096 I2C 128-bit 1 0.1 Detail
M24SR16 ISO14443 16384 I2C 128-bit 1 0.1 Detail
M24SR64 ISO14443 65536 I2C 128-bit 1 0.1 Detail


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RealSmart Technologies

R205, No.1768. Yishan Road, MinHang District, Shanghai 201103, P.R China

Tel: +86 21 6432 6941


Tel: +86 21 6432 6941