ST25R3920B

批量生产
Design Win Education

用于CCC数字钥匙和汽车中控台的汽车级高性能NFC读卡器

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产品概述

描述

The ST25R3920B is an automotive grade high performance NFC universal device supporting NFC initiator, NFC target, NFC reader and NFC card emulation modes.

Designed for CCC (car connectivity consortium) digital key applications, the ST25R3920B enables fast product development for car access/start applications in areas like door handle or center console, and enables additional functionality, like pairing or NFC card protection combined with a Qi charger. Being very robust and noise tolerant while at the same time reducing electromagnetic emission, the device works even under harsh conditions, enabling an easier certification.

The device includes an advanced analog front end (AFE) and a highly integrated data framing system for ISO18092 passive and active initiator, ISO 18092 passive and active target, NFC-A/B (ISO14443A/B) reader including higher bit rates, NFC-F (FeliCa™) reader, NFC-V (ISO15693) reader up to 53 kbps, and NFC-A / NFC-F card emulation.

Special stream and transparent modes of the AFE and framing system is used to implement other custom protocols in reader or card emulation modes.

The ST25R3920B features high RF power with dynamic power output to directly drive antennas at high efficiency, achieving large interaction distance even with small antenna sizes common in door handles. The device include additional features, making it incomparable for low power applications. It offers low power card detection by performing a measurement of the amplitude or phase of the antenna signal while reducing power consumption to a minimum.

The ST25R3920B is designed to operate from a wide power supply range (2.6 to 5.5 V from -40 °C to +105 °C, 2.4 to 5.5 V from -20 °C to +105 °C), and a wide peripheral IO voltage range (from 1.65 to 5.5 V).

Due to this combination of high RF output power, low power modes, wide supply range and AEC-Q100 grade 2 qualification the device is perfectly suited for automotive applications.

  • 所有功能

    • AEC-Q100 qualified
    • Operating modes
      • Reader/writer
      • Card emulation
      • Active and passive peer to peer
    • RF communication
      • EMVCo®3.1a analog and digital compliant
      • NFC-A / ISO14443A up to 848 kbit/s
      • NFC-B / ISO14443B up to 848 kbit/s
      • NFC-F / FeliCa™ up to 424 kbit/s
      • NFC-V / ISO15693 up to 53 kb/s
      • NFC-A / ISO14443A (106 kbit/s) and NFC-F / FeliCa™ (212/424 kbit/s) card emulation
      • Active and passive peer to peer initiator and target modes, up to 424 kbit/s
      • Low level modes to implement MIFARE Classic® compliant or other custom protocols
    • 主要特性
      • Dynamic power output (DPO) controls the field strength to stay within given limits
      • Active wave shaping (AWS) reduces over-and under-shoots
      • Noise suppression receiver (NSR) allows reception in noisy environment
      • Automatic antenna tuning (AAT) via variable capacitor
      • Integrated EMVCo® 3.1a compliant EMD handling
      • Automatic gain control and squelch feature to maximize SNR
      • Low power NFC active and passive target modes
      • Adjustable ASK modulation depth, from 0 to 82%
      • Integrated regulators to boost system PSRR
      • AM/PM and I/Q demodulator with baseband channel summation or automatic channel selection
      • Possibility to drive two independent single ended antennas
      • Measurement of antenna voltage amplitude and phase, RSSI, on-chip supply and regulated voltages
    • External communication interfaces
      • 512-byte FIFO
      • Serial peripheral interface (SPI) up to 5 Mbit/s
      • I2C with up to 400 kbit/s in Fast-mode, 1 Mbit/s in Fast-mode Plus, and 3.4 Mbit/s in High-speed mode
    • Electrical characteristics
      • Wide supply voltage and ambient temperature range (2.6 to 5.5 V from -40 °C to +105 °C, 2.4 to 5.5 V from -20 °C to +105 °C)
      • Wide peripheral communication supply range, from 1.65 to 5.5 V
      • Quartz oscillator capable of operating with 27.12 MHz crystal with fast start-up

eDesignSuite

eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.

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Digital Power Workbench

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STPOWER Studio

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NFC Inductance

Input geometry and substrate properties
Get antenna impedance

UHF Link Budget

Enter forward and reverse link characteristics
The tool returns link budget estimate

NFC Tuning Circuit

Enter antenna parameter and matching target
Select the topology of the matching network
The tool returns component values for the desired design targets

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STMicroelectronics - ST25R3920B

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质量与可靠性

产品型号 Marketing Status 等级规格 符合RoHS级别 材料声明**
ST25R3920B-AQWT
批量生产
VFQFPN 5X5X1 32L WETTABLE FLANKS 汽车应用 Ecopack2

ST25R3920B-AQWT

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VFQFPN 5X5X1 32L WETTABLE FLANKS

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Marketing Status

批量生产

Package

VFQFPN 5X5X1 32L WETTABLE FLANKS

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Automotive

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Ecopack2

(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此,它们可能不是100%适用于特定的设备。有关特定设备的信息,请联系 销售支持

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ST25R3920B-AQWT 批量生产

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(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商