ST21NFCA| Datasheet

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ST21NFCA
Near field communication microcontroller
Data Brief

Features
ST21NFCA operating modes supported:

Card emulation Reader Peer-to-peer communication

VFQFPN32

Hardware features

Security features

Enhanced 8/16-bit CPU core with 16 Mbytes linear addressable memory 112 Kbytes of User ROM 4 Kbytes of RAM 36 Kbytes of EEPROM including 64 bytes User OTP area High integrated analog front end (AFE) for RF transmission and reception including automatic card and field detection modes Three 8-bit timers with interrupt capability Battery Off and Battery Low modes supported in Card Emulation mode Optimized power consumption modes SIM and ST21NFCA power management functions

True random number generator ISO/IEC 3309 CRC calculation block Unique serial number on each die Hardware DES accelerator

Electrical characteristics

Standby current: < 75 uA (typ.) Card emulation: < 8 mA in normal mode Standby current for Reader mode: ~200 uA in Card Detection mode Reader mode: < 70 mA (typ.) 3V power supply Supports Class B and C for UICC

Software features

RF communications

ISO/IEC 14443 A&B ISO/IEC 15693 ISO/IEC 18000-3 Mod1 ECMA340 (NFCIP-1) Supports FeliCaTM cards as described in ECMA340 specification All RF communications are available in card and reader modes

Includes all drivers supporting the handling and host protocols for contact and contactless interfaces Includes complete firmware driving switch modes between operating modes and host controller interface functions (HCI)

Validation tools
An evaluation and debugging board is available for complete integration.

Communication interfaces

Single Wire Protocol (SWP) interface

I2C Slave interface SPI Slave interface Asynchronous receiver transmitter ISO/IEC 7816-3 master interface supporting T=0 and T=1 protocols

February 2008

Rev 1

1/6
www.st.com 6

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