NFC controller supporting Active Load Modulation booster

The ST21NFCC is a single chip designed for supporting 13.56 MHz contactless communication, including Near Field Communication (NFC) functions in Card Emulation mode.

This product is based on an advanced Smartcard ST21 microcontroller with 36 Kbytes of EEPROM.

The ST21NFCC is a serial access circuit based on a 8/16-bit CPU core. Operations are synchronized with an internally generated clock issued by the Clock Generator module.

Thanks to an enhanced power switch system, the ST21NFCC manages the power management of the device and its associated Secure Elements.

Key Features

  • NFC Card Emulation in connection to an active load modulation RF front-end
  • Hardware features
    • 36 Kbytes of EEPROM
    • RF digital interface for connection with external RF active Front-End IC.
    • Optimized power consumption modes
    • Battery voltage monitoring
    • Support for up to 3 external Secure Elements
    • Enhanced testability
  • Package
    • WFBGA 64-pin 4x4x0.8, MSL 1, ECOPACK®2
  • RF communications
    • Passive communication mode
      • ISO/IEC 14443 Type A & B
      • JIS X 6319 – 4
  • Communication interfaces
    • Three SWP interfaces
    • I²C Slave interface up to 1 Mbit/s
    • Dedicated SPI master interface for external RF active Front-End control
  • Electrical characteristics
    • Battery voltage support from 0 V to 5 V
    • Supports Class B and C operating conditions for UICC
    • Ambient operating temperature -25 to + 85 °C
  • Applications
    • Mobile devices
    • Wearable devices
    • SmartWatch
    • Secure Connected Devices


Technical Documentation

Product Specifications
Description Version Size
DB2498 DB2498: Near field communication controller 1.0 244 KB

Publications and Collaterals

Description Version Size
ST NFC enabled solutions 1.0 2 MB
Secure MCUs for mobile communications and M2M 2.4 540 KB
Description Version Size
Brochure Secure MCUs Secure Solutions 1.2 1 MB
NFC solutions from ST 1.0 3 MB
ST’s solutions for mobile devices 2 MB
Support & Community

Sample & Buy

Part Number Marketing Status Quantity Unit Price (US$) * Package Packing Type ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
ST21NFCC Active - - DICE Not Applicable NEC 3A991A2 - MORE INFO No availability reported, please contact our Sales office

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
ST21NFCC ActiveDICEIndustrialN/A

(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.