NTAG 223 DNA / 224 DNA

The NTAG 223 DNA and NTAG 224 DNA operate at 13.56 MHz as ISO/IEC 14443 Type A compliant and NFC Forum Type 2 tag ICs. They employ load modulation with Manchester coding at 106 kbit/s bidirectional data rate. The anti-collision mechanism follows ISO/IEC 14443-3 Type A with cascade levels for unique 7-byte UIDs.

Memory is organized in NFC Forum Type 2 compliant pages. The underlying command set includes Type 2 standard commands: READ, WRITE, and SECTOR_SELECT. These ICs integrate Sun/Message Authentication functionality for generating unique, authentication-capable responses per tap.

Potential applications aligned with the stated Brand Protection, NFC Marketing, and Access Control use cases include:

• Product authentication tags where unique per-interaction responses enable server-side verification of tag genuineness
• Consumer engagement campaigns leveraging tap-to-interact functionality without requiring app installation
• Physical access credentials with enhanced copy-detection through authenticated data exchange

Reader compatibility: Any ISO/IEC 14443 Type A or NFC Forum Type 2 compliant reader/phone should enumerate these tags. Standard READ and WRITE commands apply for Type 2 memory operations. The GET_VERSION command retrieves product version information per NXP NTAG convention.

For DNA authentication features: The tag generates a unique response (Sun/Message Authentication) based on a tap counter and cryptographic material. Server-side validation is required; the tag does not perform bidirectional authentication with the reader alone. The authentication response changes with each tap, enabling copy-detection.

Memory layout follows standard NFC Forum Type 2 with capability container at pages 03h, NDEF payload area, and reserved system pages. Ensure writes respect page granularity and avoid overwriting lock/config pages. The exact memory size differs between NTAG 223 DNA and NTAG 224 DNA variants—verify specific part number documentation.

When sourcing, verify:

• Exact part number: NTAG 223 DNA vs. NTAG 224 DNA (different memory sizes)
• Whether "StatusDetect" variant is required (see related NTAG 223 DNA StatusDetect)
• Documentation revision for DNA feature commands and authentication server requirements
• Package form factor: wafer, MOA8, or strap options per NXP availability
• Sample validation procedure for DNA authentication response verification against NXP reference implementation