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NFCSTMicroelectronics

ST25TA02KB

The STMicroelectronics ST25TA02KB is an NFC tag IC, with 2 Kbit EEPROM (256 bytes), operating at 13.56 MHz, under ISO/IEC 14443-A NFC Forum Type 4.

NFC Forum Type 4, ISO 14443A, secure element

Official Datasheet ↗
Frequency
13.56 MHz
Protocol
ISO/IEC 14443-A, NFC Forum Type 4
Memory
2 Kbit EEPROM (256 bytes)
Interface
RF (contactless), I2C
Temp Range
-25°C to +85°C
Form Factor
MO-146 (SO8), MO-229 (TSSOP8), Wafer

Full Specifications

ManufacturerSTMicroelectronics
Frequency CategoryNFC
Frequency13.56 MHz
ProtocolISO/IEC 14443-A, NFC Forum Type 4
Memory2 Kbit EEPROM (256 bytes)
InterfaceRF (contactless), I2C
Temperature Range-25°C to +85°C
Form FactorMO-146 (SO8), MO-229 (TSSOP8), Wafer
SecurityAES-128, 3DES, ECC P-256, secure channel (SCP), common criteria EAL5+

Engineering Brief

The ST25TA02KB is a secure NFC Forum Type 4 tag with integrated cryptographic coprocessor, featuring 2 Kbit EEPROM and dual RF/I2C interfaces. It supports AES-128, 3DES, and ECC P-256 cryptography with Common Criteria EAL5+ certification, making it ideal for high-security authentication applications. The chip operates at 13.56 MHz and complies with ISO/IEC 14443-A, enabling both contactless NFC interactions and host communication via I2C. Its robust security features and flexible interface make it suitable for brand protection, secure pairing, and IoT device authentication.

Typical Applications

Standards & Compliance

Frequently Asked Questions

What security certifications does the ST25TA02KB have?

The ST25TA02KB has Common Criteria EAL5+ certification, one of the highest security assurance levels available. It features AES-128, 3DES, and ECC P-256 cryptographic algorithms with secure channel protocol (SCP) support for high-security authentication applications.

How much memory does the ST25TA02KB have?

The ST25TA02KB has 2 Kbit (256 bytes) of EEPROM memory for data storage.

What interfaces does the ST25TA02KB support?

The ST25TA02KB features dual interfaces: contactless RF at 13.56 MHz for NFC communication and I2C for direct host communication. This enables both over-the-air NFC interactions and wired configuration/data exchange.

Is the ST25TA02KB compatible with standard NFC readers?

Yes, the ST25TA02KB is fully compatible with standard NFC readers. It complies with ISO/IEC 14443-A and NFC Forum Type 4 specifications, enabling seamless interaction with smartphones and commercial NFC infrastructure.

What cryptographic algorithms does the ST25TA02KB support?

The ST25TA02KB supports AES-128 symmetric encryption, 3DES legacy encryption, and ECC P-256 elliptic curve cryptography for asymmetric operations. It includes a dedicated cryptographic coprocessor for secure key storage and cryptographic operations.

What are typical applications for the ST25TA02KB?

The ST25TA02KB is designed for high-security applications including brand protection against counterfeiting, secure device pairing, IoT device authentication, and access control systems where EAL5+ certified cryptographic protection is required.

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Standards
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