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NFC controller and Secure Element single die and a UWB secure, fine-ranging subsystem host

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Product overview


The ST54K is a single-die solution integrating a contactless front-end (CLF) and a secure element, called ST54K_CLF and ST54K_SE, respectively. It is designed for integration in mobile devices and NFC-compliant products.

The ST54K_CLF includes near-field communication (NFC) functions in the three operating modes: Card Emulation, Reader/Writer and Peer-to-Peer communication.

It is best in class in terms of RF output power (up to 2 W). With its outstanding output power and optimized efficiency, the ST54K driver can be connected to metal frame antennas. Thanks to improved low-power card detection sensitivity, in Reader/Writer mode, the ST54K_CLF operating in low-power mode is capable of detecting the presence of a card/tag from a distance greater than the Reader mode performance.

In Card Emulation mode, the ST54K_CLF is capable of operating without an external quartz or an external reference clock source, contributing to further reducing the current consumption of the system in low-power mode. Moreover, thanks to its improved field detection sensitivity, the ST54K_CLF is capable, in low-power mode, of detecting the presence of a reader's RF field from a distance greater than the CE mode performance.

The ST54K_SE is a serial access microcontroller designed for secure mobile applications. It incorporates the most recent generation of Arm® processors for embedded secure systems. The SecurCore® SC300™ 32-bit RISC core is built on the Cortex®-M3 core, with additional security features to help to protect against advanced forms of attacks.

The ST54K device offers connectivity and security with its UWB subsystem, which supports emerging secure fine ranging as defined and standardized by the Car Connectivity Consortium® (CCC) and the FiRa™ Consortium.

The CCC specifies and ensures the interoperability of digital key (DK) phase 3 seamless car opening applications while the FiRa™ Consortium specifies and ensures the interoperability of multiple UWB use cases including access control and transit.

  • All features

      • Single die integrating an NFC controller, a secure element and a UWB secure, fine-ranging subsystem host
      • Small, ECOPACK-compliant WLCSP81 package
      • State of-the-art secure element and eSIM Java® operating system.
    • NFC controller
      • Arm® Cortex®-M3 microcontroller
      • 100% re-flashing capability for firmware update
      • Enhanced active load modulation technology
      • Enhanced TX drive up to 2 W with support of an external 5 V DC/DC converter for TX supply
      • Optimized for extremely small or metal-frame antennas
      • Optimized power consumption modes
      • Ultralow-power Hibernate mode with field detection for low-power mode support
      • Proprietary in-frame synchronization (IFS) in Card Emulation (CE) mode to ensure stability in battery Low and Switched OFF modes
      • System clock:
        • Fractional-N PLL input range of 19.2 to 76.8 MHz
        • 27.12 MHz external crystal oscillator
      • Automatic wakeup via communication interfaces, internal timers, GPIO, RF field or tag detection
    • RF communications
      • NFC active and passive Peer-to-Peer mode
        • ISO/IEC 18092 - NFCIP-1 Initiator & Target
      • NFC Reader/Writer mode
        • NFC Forum™ Type 1/2/3/4/5 tags
        • FeliCa™
        • ISO/IEC 15693
        • MIFARE®
      • NFC Card Emulation mode
        • ISO/IEC 14443 Type A & Type B
        • FeliCa™
        • MIFARE®
      • Ultra-wideband (UWB) subsystem host control:
        • Car Connectivity Consortium® (CCC) digital key (DK) phase 3
        • FiRa™ (fine ranging) secure UWB use cases
    • External communication interfaces
      • Two master SWP interfaces operating at up to 1.695 Mbit/s
      • Slave I²C interface supporting Standard-mode, Fast-mode, Fast-mode Plus and High-speed mode
      • Master SPI running at up to 8 MHz dedicated to the UWB subsystem
      • Slave SPI interface running at up to 26 MHz
      • ISO/IEC 7816-3 interface
      • General-purpose inputs/outputs (GPIOs)
    • Internal communication interfaces
      • CLF/SE SWP digital interface
      • 120 Mbits/s interprocessor communication (IPC) based on a shared internal memory
    • Secure microcontroller
      • Arm® SecurCore® SC300™ 32-bit RISC core cadenced at 100 MHz
      • Up to 2048 Kbytes of user Flash memory
      • 2 Kbytes of memory cache
      • 64 Kbytes of user RAM
      • Power-saving Standby and Hibernate states
    • Secure operating system
      • Supports state-of-the-art secure element operating systems:
        • Java® Card 3.0.5
        • GlobalPlatform® 2.3 with Amdts
        • EMVCo™ certification
        • FeliCa™ certification
      • Security-certified according to CC EAL5+
      • Hardware security-enhanced DES & AES accelerators
      • MIFARE Classic cryptography hardware accelerator
      • NESCRYPT coprocessor for public key cryptography algorithms
    • Electrical characteristics
      • Battery voltage support from 2.4 V to 5.0 V
      • I/O dedicated voltage level (VPS_IO) from 1.62 V to 3.3 V
      • Supports Class B and Class C operating conditions for external universal integrated-circuit cards (UICCs)
      • Ambient operating temperature −25 to + 85 °C

EDA Symbols, Footprints and 3D Models

STMicroelectronics - ST54K

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Quality and Reliability

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WLCSP Industrial N/A




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