STMicroelectronics – Dynamic NFC/RFID tag ICs combine long range with high-speed data transfer

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STMicroelectronics’ ST25DV series of dynamic-tag ICs have dual NFC/RFID and I2C bus interfaces, to provide for untethered interaction between an external NFC-capable smartphone or an RFID reader, and a host device’s microcontroller or applications processor.

The ST25DV IC supports data exchange over an extended wireless communication range at a frequency of 13.56MHz. This capability may be used, for instance, for in-the-box programming of electronic equipment at The ST25DV IC supports data exchange over an extended wireless communication range the point of production. Fast Transfer Mode operation, enabled by a large 256-byte buffer, also enables software updates in the field via any NFC-enabled mobile device. The ST25DV dynamic tags are compatible with any existing ISO 15693 RFID infrastructure, with no additional investment required.

The ST25DV series complies with the NFC Type 5 and ISO 15693 RFID specifications, providing the strongest features of each. It also features a large EEPROM capacity of 4kbits, 16kbits or 64kbits, with multiple 64-bit passwords offering enhanced data-protection capabilities.

The ST25DV is suitable for use in industrial applications, offering high write-cycle endurance of 1 million cycles at 25°C, and 40 years’ data retention.

FEATURES

  • Native NFC NDEF message support
  • <1μA current in stand-by mode
  • Supply-voltage range: 1.8V to 5.5V
  • Energy-harvesting capabilities
  • Operating-temperature range: -40°C to 85°C

APPLICATIONS

  • Smart meters
  • IoT devices
  • Professional products
  • Consumer devices
  • Industrial equipment
  • Battery-powered products
  • Electronic shelf labels

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This demonstration kit consists of an ST25DV04K NFC interface tag embedded on a daughtercard using a Class 5 antenna, and an STM32 processor driving a motherboard. Dedicated application software is stored in Flash memory.

Orderable Part Number: ST25DV-DISCOVERY

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