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HF 13.56 MHzNXP

MIFARE SAM AV2

The NXP MIFARE SAM AV2 is an HF 13.56 MHz RFID tag IC, with 264 kB ROM, 80 kB EEPROM (data and program), 7680 bytes RAM, 128 symmetric key entries, 3 RSA key entries, operating at 13.56 MHz (contactless reader interface), under ISO/IEC 7816 contact interface (T=1) ISO/IEC 14443 support via RC52x/RC663 reader ICs.

Secure access module for readers, TDEA/AES/RSA key storage

Official Datasheet ↗
Frequency
13.56 MHz (contactless reader interface)
Protocol
ISO/IEC 7816 contact interface (T=1), ISO/IEC 14443 support via RC52x/RC663 reader ICs
Memory
264 kB ROM, 80 kB EEPROM (data and program), 7680 bytes RAM, 128 symmetric key entries, 3 RSA key entries
Interface
ISO/IEC 7816 contact (CLK, RST, IO1/UART, VDD, VSS), I2C to RC52x/RC663 (IO2, IO3), supports up to 1.5 Mbit/s
Temp Range
-25°C to +85°C
Form Factor
PCM1.1 module (8-contact), HVQFN32 (5×5×0.85 mm), wafer (150 mm)

Full Specifications

ManufacturerNXP
Frequency CategoryHF 13.56 MHz
Frequency13.56 MHz (contactless reader interface)
ProtocolISO/IEC 7816 contact interface (T=1), ISO/IEC 14443 support via RC52x/RC663 reader ICs
Memory264 kB ROM, 80 kB EEPROM (data and program), 7680 bytes RAM, 128 symmetric key entries, 3 RSA key entries
InterfaceISO/IEC 7816 contact (CLK, RST, IO1/UART, VDD, VSS), I2C to RC52x/RC663 (IO2, IO3), supports up to 1.5 Mbit/s
Temperature Range-25°C to +85°C
Form FactorPCM1.1 module (8-contact), HVQFN32 (5×5×0.85 mm), wafer (150 mm)
SecurityTDEA (Triple-DES), AES-128/192, RSA (256–2048 bit), MIFARE Crypto1, SHA-1/SHA-224/SHA-256, CMAC, true random number generator (TRNG), secure key storage with usage counters, host authentication, secure messaging (MAC/Full Protection)

Engineering Brief

The MIFARE SAM AV2 (P5DF081) is a contact-based secure application module designed to augment contactless readers with hardware cryptography and secure key storage. It connects via ISO/IEC 7816 contact interface (UART to host) and I2C to NXP RC52x/RC663 reader ICs for accelerated MIFARE transactions. The module supports TDEA, AES-128/192, RSA (up to 2048-bit), MIFARE Crypto1, and hashing (SHA-1/224/256), with storage for 128 symmetric and 3 RSA key entries, key diversification, and usage counters. Delivered in PCM1.1, HVQFN32, or wafer form, it is certified for -25°C to +85°C operation and widely deployed in public transport, loyalty, and access control systems.

Typical Applications

Standards & Compliance

Frequently Asked Questions

What is the MIFARE SAM AV2 used for?

The MIFARE SAM AV2 is a secure access module that adds hardware cryptography and secure key storage to contactless readers. It connects via ISO/IEC 7816 contact interface to the host and I2C to NXP RC52x/RC663 reader ICs, commonly used in public transport, access control, and loyalty systems.

How many cryptographic keys can the MIFARE SAM AV2 store?

The MIFARE SAM AV2 can store up to 128 symmetric key entries (for AES, TDEA, or MIFARE Crypto1) and 3 RSA key entries (256–2048 bit) in its 80 kB EEPROM. Keys are protected with usage counters and secure storage mechanisms.

What cryptographic algorithms does the MIFARE SAM AV2 support?

The SAM AV2 supports Triple-DES (TDEA), AES-128/192, RSA (256–2048 bit), MIFARE Crypto1, SHA-1/SHA-224/SHA-256 hashing, and CMAC. It includes a true random number generator (TRNG) and secure messaging with MAC or full protection.

Does the MIFARE SAM AV2 have wireless NFC capability?

No, the MIFARE SAM AV2 is a contact-based module using the ISO/IEC 7816 interface. It enhances contactless reader functionality by providing cryptographic operations via I2C to NXP RC52x or RC663 reader ICs, which handle the 13.56 MHz contactless communication.

What is the operating temperature range of the MIFARE SAM AV2?

The MIFARE SAM AV2 is certified for operation from -25°C to +85°C, suitable for industrial and outdoor applications including public transport terminals and access control readers.

What interface speed does the MIFARE SAM AV2 support?

The MIFARE SAM AV2 supports ISO/IEC 7816 contact communication (T=1 protocol) at speeds up to 1.5 Mbit/s on the UART interface (IO1), with additional I2C interface (IO2/IO3) for connecting to RC52x/RC663 reader ICs.

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