The NTAG I2C was the first product of NXP’s NTAG® family offering both contactless and contact interface. Meanwhile NTAG I2C _plus_, which is fully backward compatible, but with extended feature set and improved interoperability is available. For new projects NXP recommends to use NTAG I2C _plus_.
More information about NTAG I²C applications and use cases can be found in brochure "NFC for embedded applications".
MoreLess
## Features
### Key features
* Pass-through mode
* Up to 10 kbit/s using 64 byte SRAM buffer
* Energy harvesting
* Up to 15 mW
* Wake up host with field detect pin
### NFC interface
* Interoperability
* Fully ISO/IEC 14443 A compliant
* Fully NFC Forum Type 2 Tag compliant
* Uniqueness
* 7-byte Unique Identifier (according to ISO/IEC 14443-3)
* GET_VERSION command for easy identification of chip type and supported features
* ISO/IEC 14443 and NFC Forum Type 2 Tag features
* Operating distance up to 100 mm
* True anti-collision
* 4-byte write operation in < 4.8 ms to EEPROM and >0.8 ms to SRAM
### I2C interface
* Features
* I2C slave interface supports up to 400 kHz
* 16-byte write operation in < 4.5 ms to EEPROM and > 0.4 ms to SRAM
* Device maybe used as standard I2C EEPROM or I2C SRAM
### Security
* NFC Forum Type 2 Tag features
* 7-byte Unique Identifier
* One time programmable Capability Container
* Read-only locking
### Memory
* Built-in memory
* 1908 or 888-bytes freely available user memory area
