ICODE 3 vs ST25TV02K

Choose ICODE 3 if you require advanced security features and larger memory capacity. The chip provides 2400 bits (300 bytes) of user data across blocks 0-74, plus a 24-bit counter in block 75, totaling 304 bytes of usable memory. Its security architecture includes both 32-bit and 64-bit password protection, ECC-based originality signatures using secp128r1 (configurable as 32-byte or 48-byte), and two privacy modes each protected by 32-bit passwords. The chip supports comprehensive lock mechanisms at block-level and page-level, plus EAS/AFI password protection and a destroy command for permanent deactivation. Operating at 13.553-13.567 MHz within the 13.56 MHz band, it complies with ISO/IEC 15693-2 and ISO/IEC 15693-3 standards, making it suitable for applications requiring high-security item authentication, brand protection, or supply chain tracking where cryptographic verification is essential. Choose ST25TV02K if you need energy harvesting capability and a cost-effective ISO 15693 solution with adequate security for standard applications. The chip offers 256 bytes (2048 bits) of EEPROM organized in 64 blocks of 4 bytes each, which is sufficient for basic product identification and data storage. Its security features include 32-bit password protection, lock bits, and AFI support, covering typical access control needs without the cryptographic complexity of the ICODE 3. The standout feature is the integrated energy harvesting output, enabling the chip to power external sensors or microcontrollers from the RF field. It supports ISO/IEC 15693, ISO/IEC 18000-3 mode 1, and NFC Forum Type 5 protocols, ensuring broad compatibility with NFC-enabled smartphones and standard readers. This makes it ideal for IoT sensor tags, shelf-edge labels, or applications where battery-free operation and NFC smartphone interaction are priorities, and where basic password security is sufficient.