The ST25DV04K-IER8T3 is a dynamic NFC/RFID tag IC with a dual interface from STMicroelectronics, designed to deliver a flexible and secure way to add near field communication (NFC) capabilities to a wide range of applications. This IC allows for data transfer between the NFC device and an ISO15693-capable reader system.

Featuring a 4-Kbit EEPROM memory, the ST25DV04K-IER8T3 can be accessed via both the RF interface and the I2C interface, allowing for easy and intuitive data sharing and device parameter updates. The EEPROM is organized into 256 blocks of 16 bytes each, which enables a structured data organization and sector protection mechanisms to ensure data integrity and security.

The ST25DV04K-IER8T3 also supports the NFC Forum Type 5 tag and is certified by the NFC Forum, ensuring compatibility with NFC-enabled devices. This makes it ideal for a variety of applications, including consumer electronics, device configuration, product authentication, Bluetooth and Wi-Fi pairing, business cards, and more.

With its energy harvesting capabilities, the ST25DV04K-IER8T3 can power external components with the energy from the RF field, providing additional flexibility for batteryless solutions. The IC also includes a fast transfer mode feature, which allows for rapid and efficient data exchanges between the tag and an NFC phone.

The device's robust protection features include a 64-bit password protection mechanism that prevents unauthorized memory operations, thus safeguarding your data. Moreover, the ST25DV04K-IER8T3 is designed with a wide temperature range of -40°C to +85°C, making it suitable for harsh environments and a variety of industrial applications.

In summary, the ST25DV04K-IER8T3 from STMicroelectronics is a versatile and secure NFC/RFID solution that provides a range of features for innovative and efficient contactless communication in today's interconnected world.