NXP Semiconductors has launched a new type of energy-harvesting NFC Forum Type 2 tag with an I2C interface which provides a contactless bridge between an NFC device and any I2C-enabled microcontroller.
The NXP Semiconductors NTAG I2C devices, the NT3H1101W0Fxx and NT3H1201W0Fxx, support full bi-directional communication between an NFC-enabled device and the host system’s microcontroller, making them ideal for NFC designs which interface with a range of electronic devices.
By combining an NFC interface with an I2C interface, the NTAG I2C solution enables new kinds of NFC tag interactions, including advanced device pairing, personalisation of electronic devices, and device maintenance.
The devices include an externally-powered 64byte SRAM buffer for fast transfer of data in Pass-through mode between the RF and the I2C interfaces. The NTAG ICs also feature user memory: 888kbytes in the NT3H1101W0Fxx and 1,904kbytes in the NT3H1201W0Fxx.
An innovative energy-harvesting function, which makes it possible for the NTAG I2C tag to power external components such as a microcontroller, makes it an excellent choice for low-power applications.
- NFC headsets
- NFC speakers
- Wearable infotainment equipment
- Fitness equipment
- Home automation equipment
- Electronic shelf labels
- Fully compliant with the ISO/IEC 14443A 2-3 standard
- Fully compliant with the NFC Forum tag Type 2 specifications
- I2C interface supports standard 100kHz and fast 400kHz modes
- 50pF input capacitance
- Field detection