Secure access module adds hardware-backed cryptographic services for reader infrastructure. It supports DES, TDEA, AES, RSA and ECC functions with secure key storage and updating. The contact interface supports ISO/IEC 7816 operating classes A, B and C across 1.62 V to 5.5 V supply ranges. Operation is specified from -25 °C to +85 °C, with high-speed ISO/IEC 7816 communication up to 1.5 Mbit/s.
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| Cryptographic algorithms | MIFARE Crypto1, DES, TDEA, AES, RSA, ECC |
| AES key sizes | 128, 192, 256bit |
| RSA key size | Up to 2048bit |
| ECC key size | Up to 256bit |
| Symmetric key entries | 128 |
| RSA key entries | 3 |
| ECC public key entries | 8 |
| Host interface | ISO/IEC 7816 contact interface |
| Optional host interface | I2C slave mode on HVQFN package |
| Maximum high-speed baud rate | 1.5Mbit/s |
| Supply voltage range | 1.62 to 5.5V |
| Operating ambient temperature | -25 to 85°C |
| External clock frequency | 0.85 to 11.5MHz |
| Storage temperature | -55 to 125°C |
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These are design resources that include the NXP MF4SAM3SX84/9BrrffS
A guide for the MIFARE SAM AV3 secure application module, detailing cryptographic features, package options, ISO/IEC 7816 and I2C interfaces, and hardware design considerations.
