NFC Controller supporting Active Load Modulation booster

Download databrief
Sample & Buy
Tools & Software
Quality & Reliability
Get Started
Partner products
Sales Briefcase
  • The ST21NFCD is a single NFC controller IC designed for integration in mobile devices and NFC compliant products. It includes NFC functions in the three operating modes: Card Emulation, Reader/Writer and Peer to Peer communication.

    This product is based on an advanced ARM Cortex-M3 32-bit microcontroller running at 28 MHz.
    All internal operations are synchronized by a Clock Generator module.
    Two clock source options are available: using an external Quartz or using an external reference clock (in order to reduce the number of external components).
    Thanks to an enhanced power switch system, the ST21NFCD manages the power supply of the device and its associated Secure Elements.
    The ST21NFCD supports NCI 2.0.
    In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: ECOPACK® is an ST trademark.

    Key Features

    • ARM® Cortex®-M3 microcontroller
    • eFlash for full firmware update
    • Enhanced Active load modulation technology
    • Enhanced TX drive up to 1.3 W
    • Compatible with extremely small or metal frame antennas
    • Optimized power consumption modes
    • Battery voltage monitoring
    • System clock
      • FracN PLL input range from 13 to 76.8 MHz
      • 27.12 MHz external crystal oscillator
    • Integrated PMU
      • LDOs for internal voltages
      • 2 ₓ LDOs for external voltages
      • Voltage detectors for supplies monitoring
      • Low power mode state machine
    • Automatic Wake-Up via communication interfaces, internal timers, GPIO, RF field or tag detection
    • Support of an external DC/DC converter for TX supply
    • RF communications
      • Active and passive Peer-to-Peer
        • ISO/IEC 18092 - NFCIP-1 Initiator & Target
      • Passive mode – Reader/Writer
        • NFC Forum Type 1/2/3/4/5 tags
        • ISO/IEC 15693
        • MIFARE® Classic12
        • Thinfilm (ex Kovio) Barcode
      • Active mode – Card Emulation
        • ISO/IEC 14443 Type A & B
        • JIS X 6319 – 4
        • MIFARE® Classic(a)(b) through SWP-CLT
    • External communication interfaces
      • Two SWP master interfaces up to 1.695 Mbit/s
      • I2C slave interface up to 3.4 MHz
      • Slave and master SPI interface (up to 13 MHz)
      • HSUART interface up to 6 Mbit/s
    • Security features
      • Secure firmware update mechanism
    • Electrical characteristics
      • Battery voltage support from 2.4 V to 5 V
      • I/O dedicated voltage level (VPS_IO) from 1.62 V to 3.3 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

Recommended for you

Related Applications

Computers and Peripherals


Gaming and Drones

Smart Phones, Tablets and eReaders

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      Near field communication controller
      148.72 KB

      Near field communication controller

Publications and Collaterals

    • Description Version Size Action
      NFC solutions from ST 1.0
      3.29 MB
      ST’s solutions for mobile devices 2.0
      2.13 MB
      Secure Solutions - Ensuring your peace of mind 2.0
      539.44 KB

      NFC solutions from ST

      ST’s solutions for mobile devices

      Secure Solutions - Ensuring your peace of mind

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
WFBGA 4 X 4 X 0.8 - 64 B - 0.4MM Industrial N/A



WFBGA 4 X 4 X 0.8 - 64 B - 0.4MM

Material Declaration**:

Marketing Status



WFBGA 4 X 4 X 0.8 - 64 B - 0.4MM



RoHS Compliance Grade


(**) 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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
Packing Type
Country of Origin
Budgetary Price (US$)*/Qty
ST21NFCD-BGA No availability of distributors reported, please contact our sales office
WFBGA 4 X 4 X 0.8 - 64 B - 0.4MM Tape And Reel NEC FRANCE


Marketing Status


Unit Price (US$)


Budgetary Price (US$)*/Qty


WFBGA 4 X 4 X 0.8 - 64 B - 0.4MM

Packing Type

Tape And Reel



Country of Origin


(*) 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