IC specification summary
| Specification | Details |
|---|---|
| Semiconductor IC | NTAG213 |
| Interface / protocol | ISO/IEC 14443 Type A · NFC Forum Type 2 |
| User memory | 144 bytes |
| Total EEPROM | 180 bytes |
| Data rate | 106 kbit/s |
| Identifier | 7 byte UID |
| Memory access | 32 bit password protection and configurable locking |
| Originality | ECC based originality signature |
| Write endurance | 100,000 cycles, subject to datasheet conditions |
| Data retention | 10 years, subject to datasheet conditions |
Allow space for NDEF overhead when calculating the encoded message size. User memory is not the same as maximum URL length.
Password protection and an originality signature are different capabilities. NTAG21x does not provide the AES authenticated secure messaging of DESFire.
For a phone tap experience, encode and verify an NDEF message and test representative iOS and Android devices on the finished product.
