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ST25DV Series Dynamic NFC Tags

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Overview:

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

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.

The ST25DVxxx device is a NFC RFID Tag offering 4 Kbit, 16 Kbit, and 64 Kbit of electrically erasable programmable memory (EEPROM). ST25DVxxx offers two interfaces. The first one is an I2C serial link and can be operated from a DC power supply. The second one is a RF link activated when ST25DVxxx acts as a contactless memory powered by the received carrier electromagnetic wave.

ST25DVxxx offers a fast transfer mode between the RF and contact worlds, thanks to a 256 bytes volatile buffer (also called Mailbox).

In addition, the GPO pin of the ST25DVxxx provides data informing the contact world about incoming events, like RF field detection, RF activity in progress or mailbox message availability.

An energy harvesting feature is also proposed when external conditions make it possible.

Specification

  • I2 C interface
    • Two-wire I2C serial interface supports 1MHz protocol
    • Single supply voltage: 1.8V to 5.5V
    • Multiple byte write programing (up to 256 bytes)
  • Contactless interface
    • Based on ISO/IEC 15693
    • NFC Forum Type 5 tag certified by the NFC Forum
    • Supports all ISO/IEC 15693 modulations, coding, subcarrier modes and data rates
    • Custom Fast read access up to 53 Kbit/s
    • Single and multiple blocks read (same for Extended commands)
    • Single and multiple blocks write (up to 4) (same for Extended commands)
    • Internal tuning capacitance: 28.5 pF
  • Memory
    • Up to 64-kbits of EEPROM (depending on version)
    • I2C interface accesses bytes
    • RF interface accesses blocks of 4 bytes
    • Write time:
      • From I2C: typical 5ms for 1 byte
      • From RF: typical 5ms for 1 block
    • Data retention: 40 years
    • Write cycles endurance:
      • 1 million write cycles at 25 °C
      • 600k write cycles at 85 °C
      • 500k write cycles at 105 °C
      • 400k write cycles at 125 °C
  • Fast Transfer Mode
    • Fast data transfer between I2C and RF interfaces
    • Half-duplex 256-byte dedicated buffer
  • Energy harvesting
    • Analog output pin to power external components
  • Data protection
    • User memory: 1 to 4 configurable areas, protectable in read and/or write by three 64-bit passwords in RF and one 64-bit password in I2C
    • System configuration: protected in write by a 64-bit password in RF and a 64-bit password in I2C
  • GPO
    • Interruption pin configurable on multiple RF events (field change, memory write, activity, Fast Transfer end, user set/reset/pulse)
    • Open Drain or CMOS output (depending on version)
  • Low power mode (12-pin package only)
    • Input pin to trigger low power mode
  • RF management
    • RF command interpreter enabled/disabled from I2C host controller
  • Temperature range
    • 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)
  • Package
    • 8-pin and 12-pin packages
    • ECOPACK2® (RoHS compliant)

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
ST25DV04K ISO15693 4096 I2C 64-bit 1 1
ST25DV16K ISO15693 16384 I2C 64-bit 1 1
ST25DV64K ISO15693 65536 I2C 64-bit 1 1
View Package!

Contact Us

Shanghai RealSmart Technologies Co., Ltd.

Rm 706,Bldg of Vorwerk, No.1768. Yishan Road, MinHang District, Shanghai 201103, P.R China

Tel: +86 21 6432 6941

Fax: +86 21 6432 6942

Email: contacts@rsmart.com.cn

Tel: +86 21 6432 6941   Fax: +86 21 6432 6942   E-mail:contacts@rsmart.com.cn   webmaster:Kelly@rsmart.com.cn

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