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Product description: X-NUCLEO-NFC07A1 - NFC/RFID tag - extension to STM32 Nucleo
NUCLEO-NFC07A1 from STMicroelectronics is a shield for STM32 modules from the Nucleo series. The board is based on the dynamic NFC tag system - ST25DV64KC, with 64 kB of EEPROM memory. It enables communication with the microcontroller via the I2C interface, through a connector compatible with Arduino UNO R3. Thanks to the connector on the upper side of the board, it is possible to use more modules. The system is based on the ISO/IEC 15693 standard and is an NFC type 5 tag. The maximum data transmission rate is 53 kb/s. It can be powered by the Nucleo module or by an external electromagnetic field after the reader is brought close to it. It has an antenna with a diameter of 54 mm integrated in the PCB.
The manufacturer provides libraries and sample software compatible with the STM32Cube environment.
X-NUCLEO-NFC07A1 - NFC/RFID tag - extension to STM32 Nucleo 
The module has an antenna integrated in the board.
How does an NFC tag work?
NFC (Near-field communication) is a wireless communication standard with a short range (up to 20 cm) using high frequencies (13.56 MHz ± 7 kHz). This technology was popularized mainly in the form of contactless payments or access cards. It is an extension of the contactless card standard - ISO/IEC 14443 .
An NFC tag is a small device, often in the form of a card, key ring or sticker. It has an antenna and a small integrated circuit that stores previously programmed information. After approaching the reader, it is powered and starts transmitting data. The possibility of reprogramming the system (e.g. ST25DV64KC) allows for repeated use of one tag for many applications.
X-NUCLEO module specifications
- Communication type: NFC type 5 tag
- Intended use: STM32 modules from the Nucleo series
- Built-in chip: ST25DV64KC
- Supported standard: ISO/IEC 15693
- Reading speed up to 53 kbit/s
- EEPROM memory: 64 kB
- Memory read and write protection
- Interrupt output: GPO
- Power supply: via NFC reader or goldpin connector
- Communication interface: I2C
- Possibility to change the I2C address
- Connector: goldpin, 2.54 mm pitch, compatible with Arduino UNO R3
- Antenna: built-in PCB, diameter 54 mm
- LEDs: 3 general purpose
- Possibility to use multiple overlays at the same time
