ST25R3920

量産中
Design Win

Automotive high performance NFC reader for CCC digital key and car center console

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製品概要

概要

The ST25R3920 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 ST25R3920 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 can be used to implement other custom protocols in reader or card emulation modes.

The ST25R3920 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. Additionally, it contains a low power capacitive sensor to detect the presence of a card without switching on the reader field.

The ST25R3920 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.

  • 特徴

    • AEC-Q100 qualified
    • Operating modes
      • Reader/writer
      • Card emulation
      • Active and passive peer to peer
    • RF communication
      • EMVCo™ 3.0 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 and NFC-F / FeliCa™ 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
    • 特徴
      • 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™ 3.0 compliant EMD handling
      • Automatic gain control and squelch feature to maximize SNR
      • Low power capacitive and inductive card detection
      • Low power NFC active and passive target modes
      • Adjustable ASK modulation depth, from 5 to 40%
      • 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.

NFC/RFID Calculators

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NFC Inductance

Input geometry and substrate properties
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NFC Tuning Circuit

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Select the topology of the matching network
The tool returns component values for the desired design targets

EDAシンボル / フットプリント / 3Dモデル

STMicroelectronics - ST25R3920

アプリケーションに適したEDAシンボル、フットプリント、および3Dモデルをダウンロードしてご利用頂けます。また、ご使用の設計ツールチェーンに対応したさまざまなCADフォーマットもご利用頂けます。

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品質 & 信頼性

製品型番 マーケティング・ステータス パッケージ グレード RoHSコンプライアンスグレード 材料宣誓書**
ST25R3920-AQWT
量産中
VFQFPN 5X5X1 32L WETTABLE FLANKS オートモーティブ Ecopack2

ST25R3920-AQWT

Package:

VFQFPN 5X5X1 32L WETTABLE FLANKS

Material Declaration**:

PDF XML

Marketing Status

量産中

Package

VFQFPN 5X5X1 32L WETTABLE FLANKS

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) st.comで提供している材料宣誓書は、パッケージ・ファミリ内で最も一般的に使用されているパッケージに基づく汎用ドキュメントの場合があります。そのため、特定の製品では100%正確ではない可能性があります。特定の製品情報については、セールスサポートまでお問い合わせください

サンプル & 購入

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製品型番
Order from distributors
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製品ステータス
ECCN (US)
ECCN (EU)
梱包タイプ
パッケージ
温度(℃) Country of Origin
Budgetary Price (US$)*/Qty
最小
最大
ST25R3920-AQWT Available at distributors

販売代理店在庫 ST25R3920-AQWT

販売代理店
地域 在庫 最小発注数量 パートナー企業リンク

販売代理店在庫データ:

販売代理店に在庫がない場合は、STのセールス・オフィスまでお問い合わせください

量産中
EAR99 NEC Tape and Reel VFQFPN 5X5X1 32L WETTABLE FLANKS -40 105 THAILAND

ST25R3920-AQWT 量産中

パッケージ:
VFQFPN 5X5X1 32L WETTABLE FLANKS
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

製品型番:

ST25R3920-AQWT

ECCN (EU):

NEC

梱包タイプ:

Tape and Reel

Operating Temperature (°C)

最小:

-40

最大:

105

Country of Origin:

THAILAND

販売代理店

販売代理店在庫データ:

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(*)概算用の参考価格(US$)です。現地通貨でのお見積りについては、STのセールス・オフィスまたは販売代理店までお問い合わせください。