The CLOUD- ST25TA is a ready-to-use demo board intended to evaluate the ST25TA02K-P.The ST25TA02K-P device is a dynamic NFC/RFID tag IC with a digital GPO embedding a 2 Kbit EEPROM that supports NDEF Tag Application for NFC Forum Type 4.The device communicates using the ISO/IEC 14443 Type A protocol, and it’s fully powered by the RF field. When the GPO output is used, an external reference voltage is required to set the high level voltage of the GPO signal: this allows to be directly compatible with the I/O voltage of the MCU or Host, without the need for any level shifter.The GPO signal of the ST25TA02K-P is active (HIGH) when asserted and thus can be used as a rising edge interrupt. It may be configured through the RF interface for various functions, such as indicating Field Detection (by default) amongst others to wake-up an MCU or Host like Bluetooth or Wi-Fi chipset.
• Ready-to-use printed circuit board including:– ST25TA02K-P NFC/RFID Tag in UFDFPN5 ECOPACK2® package– 19 mm single layer inductive antenna etched on the PCB• Contactless interface:– NFC Forum Type 4 Tag– ISO/IEC 14443 Type A– 106 kbps data rate– Internal 50 pF tuning capacitance allowing small inductive antenna design• Memory:– 256 Bytes (2 Kbit) EEPROM with NDEF data support– 200 years data retention– 1 million erase-write cycles endurance– 128 bit password data protection– 20 bit events counter for read or write access with anti-tearing feature• Digital pad– GPO: configurable General Purpose Output, indicating e.g. RF Field Detection• Associated Android application for smartphone used as a NFC Reader, available ondedicated web pages on google.com and www.st.com.