The NTAG I²C is the first product of NXP’s NTAG family offering both contactless and contact interfaces. In addition to the passive NFC Forum compliant contactless interface, the IC features an I²C contact interface, which can communicate with a microcontroller if the NTAG I²C is powered from an external power supply. An additional externally powered SRAM mapped into the memory allows a fast data transfer between the RF and I²C interfaces and vice versa, without the write cycle limitations of the EEPROM memory.
The NTAG I²C product features a configurable field detection pin, which provides a trigger to an external device depending on the activities at the RF interface.
The NTAG I²C product can also supply power to external (low power) devices (e.g. a microcontroller) via the embedded energy harvesting circuitry.
More information about NTAG I²C applications and use cases can be found in brochure “NFC for embedded applications”.