Qwiic Dynamic NFC/RFID Tag - module with a dynamic NFC/RFID tag

Description

NFC/RFID tag equipped with ST25DV64KC NFC/RFID tag from STMicroelectronics. The chip offers a 64kbit (8kbyte) EEPROM that can be accessed via both I2C and RF (NFC). The tag is ISO/IEC 15693 or NFC Forum Type 5 compliant. It has a general purpose output that acts as an external interrupt to report events such as RF field changes, RF activity, I2C write and RF switches. It has a supply voltage range of 1.8 V to 5.5 V. It supports fast transfer mode to transfer the contents of a 256-byte buffer between a device connected to the tag via I2C and an RF device such as a reader or smartphone. This allows you to store data on the tag and make it readable by an RF device by placing it within RF reading range even when the tag is turned off. Data can also be protected with a 64-bit password. The included Arduino library provides support for reading and writing user memory, controlling read and writing permissions, resizing an area, and applying password controls. The module can work with the "NFC Tap" application by ST, available in the Apple App Store and Google Play. Android users can also use NFC wakdev tool. Full documentation with examples of use are available on the product page.

Features

• Contactless Interface
  • Based on ISO/IEC 15693
  • NFC Forum Type 5 tag certified by the NFC Forum
  • Supports all ISO/IEC 15693 modulations, coding, sub-carrier modes and data rates
  • Custom fast read access up to 53kbit/s
• Memory
  • 64-kBit (8-kByte) of EEPROM
  • I2C interface accesses bytes
  • RF interface accesses blocks of 4 bytes
  • Write time:
  • From I2C: typical 5ms for 1 up to 16 bytes
  • From RF: typical 5ms for 1 block
  • Data retention: 40 years
  • Write cycle endurance: 400k to 1 million depending on temperature
• Data protection
  • User memory: one to four 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
• General Purpose Output (GPO) pin
  • Interrupt pin configurable on multiple RF and I2C events
• Energy Harvesting
• Supply Voltage: 1.8VMin, 5.5VMax (Qwiic bus operates at 3.3VMax)
• I2C Addresses:
  • User Memory: 0x53
  • System Memory: 0x57
  • RF Switch Off: 0x51
  • RF Switch On: 0x55