Smart Card Interface IC, 13.56 MHz, 64-HVQFN, NXP
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General description


The MFRX852 is a new highly integrated security reader module for contactless communication at 13.56 MHz. It combines a completely integrated Secure Application Module (SAM), data processing and modulation/demodulation for high security passive contactless communication methods and protocols at 13.56 MHz.

The MFRX852 supports the following contactless protocols and features:

  • all layers of the ISO/IEC 14443 including the type A and type B communication scheme
  • contactless T=CL protocol for MIFARE DESFire communication
  • contactless communication using higher baud rates

The MFRX852 is primarily designed for secure transport applications and related loyalty programs. Other possible applications are for example, general secure reader applications, Automatic Fare Collection (AFC) terminals, value checkers, ePassport readers and security handheld readers.

It supports the MIFARE Mini, MIFARE 1K, MIFARE 4K security algorithm to authenticate MIFARE Mini, MIFARE 1K, MIFARE 4K products. In addition, DES/3DES and AES security algorithms are supported to authenticate NXP MIFARE DESFire and MIFARE DESFire EV1 products. Additional immunity against security attacks is provided by the high integration of security processor and contactless interface into a single module package.

Reduced complexity of security reader design, hardware and software development is achieved by high integration of several hardware components into one small module package of 7 mm × 7 mm.

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Features and benefits


2.1 General

  • Hard reset with low power function
  • User-programmable reader start-up configuration
  • Power-down mode per software
  • Integrated oscillator to connect 13.56 MHz
  • 3.3 V to 5 V operation power supply
  • CRC coprocessor
  • Internal self-test

2.1.1 Contactless interface

  • Highly integrated analog circuitry to demodulate and decode responses
  • Buffered output drivers for connecting to an antenna with the minimum number of external components
  • Supports ISO/IEC 14443A/MIFARE and ISO/IEC 14443B
  • Supports contactless communication with higher baud rates up to 848 kbaud
  • Support of MFIN/MFOUT
  • Internal power supply for the smart card IC connected via MFIN/MFOUT
  • Bit- and byte-oriented framing

2.2 Host interface

  • T=1 communication protocol as defined in ISO/IEC 7816-3
  • Automatic detection of host processor interface type

2.3 Key storage memory

  • 10 years data retention
  • Write endurance of 100 000 cycles
  • 128 key entries (1 SAM master key entry)
  • Up to 3 key versions for each entry
  • Key cache (8 entries) for accelerating key access

2.4 Security

  • Unique serial number for each SAM device
  • Hardware (3)DES coprocessor
  • Hardware AES coprocessor
  • Hardware MIFARE Mini, MIFARE 1K, MIFARE 4K crypto coprocessor

2.5 SAM functions

  • Support of multiple CIDs/logical channels in parallel, separated by hardware firewall
  • Generate session key to support DESFire "Authenticate" commands
  • Generate session key to support secured host communication
  • Verify (3)DES generated 4 byte and 8 byte MACs based on session key (optional)
  • Create (3)DES generated 4 byte and 8 byte MACs based on session key (optional)
  • Verify AES generated 8 byte MACs based on session key (optional)
  • Create AES generated 8 byte MACs based on session key (optional)
  • Decipher and verify (3)DES or AES enciphered data based on session key (optional)
  • Encipher plain data using (3)DES or AES based on session key (optional)
  • Secure update of all keys stored in the SAM
  • Mutual three pass authentication between SAM and SAM controller
  • Key usage counters

·         (3)DES or AES based key diversification

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