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  • The ST25R3914/5 are highly integrated NFC initiators / HF reader ICs for automotive applications, AEC-Q100 grade 1 qualified, including the analog front end (AFE) and a highly integrated data framing system for ISO 18092 (NFCIP-1) initiator, ISO 18092 (NFCIP-1) active target, ISO 14443A and B reader (including high bit rates), ISO 15693 reader and FeliCa™ reader. Implementation of other standard and custom protocols like MIFARE™ Classic is possible using the AFE and implementing framing in the external microcontroller (Stream and Transparent modes).

    The ST25R3914/5 are positioned perfectly for the infrastructure side of the NFC system, where users need optimal RF performance and flexibility combined with low power.
    Thanks to automatic antenna tuning (AAT) technology, the devices are optimized for applications with directly driven antennas. The ST25R3914/5 are alone in the domain of HF reader ICs as they contain two differential low impedance (1 Ω) antenna drivers.
    The ST25R3914/5 include several features that make them very suited for low power applications. They contain a low power capacitive sensor that can be used to detect the presence of a card without switching on the reader field. The presence of a card can also be detected by performing a measurement of amplitude or phase of signal on antenna LC tank, and comparing it to the stored reference. They also contain a low power RC oscillator and wake-up timer that can be used to wake up the system after a defined time period, and to check for the presence of a tag using one or more low power detection techniques (capacitive, phase or amplitude).
    The ST25R3914/5 are designed to operate from a wide (2.4 V to 5.5 V) power supply range; peripheral interface IO pins support power supply range from 1.65 V to 5.5 V.

    主要特性

    • AEC-Q100 qualified
    • ISO 18092 (NFCIP-1) Active P2P
    • ISO14443A, ISO14443B, ISO15693 and FeliCa™
    • Support HBR up to 848 kbit/s PICC to PCD and PCD to PICC framing
    • Capacitive sensing - Wake-up
    • Automatic antenna tuning system providing tuning of antenna LC tank (ST25R3914 only)
    • Automatic modulation index adjustment
    • AM and PM (I/Q) demodulator channels with automatic selection
    • Up to 1 W in case of differential output
    • User selectable and automatic gain control
    • Transparent and Stream modes to implement MIFARE™ Classic compliant or other custom protocols
    • Possibility of driving two antennas in single ended mode
    • Oscillator input capable of operating with 13.56 MHz or 27.12 MHz crystal with fast start-up
    • 6 Mbit/s SPI with 96 bytes FIFO
    • Wide supply voltage range from 2.4 V to 5.5 V
    • Wide temperature range: -40 °C to 125 °C
    • ST25R3914: VFQFPN32, 5 mm x 5 mm package with wettable flanks
    • ST25R3915: QFN32, 5 mm x 5 mm package

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相关应用

All tools & software

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      描述
      类型
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      ST25 - NFC / RFID软件 ST
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      STSW-ST25R009

      描述:

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CAD/EDA Symbols, Footprints and Models

质量与可靠性

产品型号 Marketing Status 封装 等级规格 符合RoHS级别 材料声明**
ST25R3914-AQWT
批量生产
VFQFPN 5X5X1 32L WETTABLE FLANKS 汽车应用 Ecopack2

ST25R3914-AQWT

Package:

VFQFPN 5X5X1 32L WETTABLE FLANKS

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

VFQFPN 5X5X1 32L WETTABLE FLANKS

Grade

Automotive

RoHS Compliance Grade

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

样片和购买

产品型号
从分销商订购
从ST订购
供货状态
ECCN (US)
ECCN (EU)
包装类型
封装
温度(ºC) Country of Origin
Budgetary Price (US$)*/Qty
最小值
最大值
ST25R3914-AQWT 没有经销商,请联系我们的销售办事处
批量生产
EAR99 NEC Tape And Reel VFQFPN 5X5X1 32L WETTABLE FLANKS -40 125 THAILAND 3.1 / 1k

ST25R3914-AQWT

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

3.1 / 1k

ECCN (EU)

NEC

包装类型

Tape And Reel

封装

VFQFPN 5X5X1 32L WETTABLE FLANKS

Operating Temperature (°C)

(最小值)

-40

(最大值)

125

Budgetary Price (US$)* / Qty

3.1 / 1k

Country of Origin

THAILAND

(*) 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