my-d move (SLE 66R01P) vs ST25TN512

Choose the Infineon my-d move (SLE 66R01P) if you need larger memory capacity and ISO 14443-3 Type A / NFC Forum Type 2 compatibility. With 128 bytes of user memory (152 bytes total organized as 38 blocks of 4 bytes each), it provides double the usable storage of the ST25TN512. The my-d move operates at 13.56 MHz and offers robust security including a 32-bit password with configurable read/write or write-only protection, a password retry counter to prevent brute-force attacks, 32-bit OTP area, individual block locking, and a 16-bit value counter with anti-tearing protection. This chip suits applications requiring NFC Forum Type 2 compatibility, such as consumer NFC interactions with smartphones, access control systems where retry limiting is important, or ticketing applications that benefit from the anti-tearing counter feature. Choose the STMicroelectronics ST25TN512 if your application requires ISO 15693 / NFC Forum Type 5 protocol compatibility and you can work within a smaller 64-byte (512-bit) EEPROM memory budget. Operating at 13.56 MHz, this chip follows the ISO 15693 standard which typically offers longer read ranges compared to ISO 14443-3 Type A, making it suitable for inventory tracking, asset management, or industrial applications where extended reading distance is valued over memory capacity. The ST25TN512 provides 32-bit password protection and lock bits for basic security needs. The significantly smaller memory footprint—half that of the my-d move's user memory—makes this appropriate for simple identification tasks, UID storage, or applications where data payloads are minimal, such as basic item-level tagging or presence detection systems that prioritize read range over data storage.