STMicroelectronics' CLOUD-ST25TA02KB is a ready-to-use demonstration board designed to evaluate the ST25TA02KB-P dynamic NFC/RFID tag IC with a digital general-purpose output (GPO), embedding a 2 Kb EEPROM that supports NDEF tag applications for NFC forum Type 4.

The device communicates using the ISO/IEC 14443 Type A protocol and is 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 to be directly compatible with the I/O voltage of the MCU or the host without the need for any level shifter. The GPO signal is active high when asserted and can be used as a rising edge interrupt. The CLOUD-ST25TA02KB may be configured through the RF interface for various uses such as indicating field detection (by default) to wake-up a microcontroller (MCU), a host like a Bluetooth®, or a Wi-Fi chipset.