产品概述
描述
The ST25R3920 is an automotive grade high performance NFC universal device supporting NFC initiator, NFC target, NFC reader and NFC card emulation modes.
Ideally fitting the CCC (car connectivity consortium) digital key specifications, the ST25R3920 satisfies the requirements 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 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.
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所有功能
- 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
- 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 3.0 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
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Power Management Design Center
Thermal-electrical Simulators for Components
Signal Conditioning Design Tool
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Power Supply Design Tool
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Handles AC-DC and DC-DC design in common topologies Displays interactive and annotated schematic Provides current/voltage graphs, Bode plots, efficiency curves and power-loss data 
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Provides a step-by-step optimized design of power section and control loop Generates the STM32Cube embedded software package for custom applications and allows firmware project generation, compatible with multiple STM32 IDEs 
Power Tree Designer
Specify input/output power for each node in the tree Check for consistency Design each individual node 
AC Switches Simulator
Select ratings and application waveforms Get junction temperature and blocking voltage graphs Search and sort suitable devices 
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Select ratings and application waveforms Estimate power losses Search and sort suitable devices 
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Supports long mission profiles Provides power loss and temperature graphs Helps define heatsink thermal properties 
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Help select the right ViPOWER Automotive power device Supports load-compatibility, wiring harness optimization, fault condition impact and diagnostic analysis Supports various PCB configurations 
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特别推荐
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全部资源
| 资源标题 | 版本 | 更新时间 |
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产品规格 (1)
| 资源标题 | 版本 | 更新时间 | ||
|---|---|---|---|---|
| 1.0 | 13 Jun 2023 | 13 Jun 2023 |
应用手册 (5 of 9)
| 资源标题 | 版本 | 更新时间 | ||
|---|---|---|---|---|
| 1.0 | 30 May 2023 | 30 May 2023 | ||
| 1.0 | 03 May 2022 | 03 May 2022 | ||
| 1.0 | 09 Mar 2023 | 09 Mar 2023 | ||
| 1.0 | 01 Jun 2023 | 01 Jun 2023 | ||
| 3.0 | 22 Jun 2023 | 22 Jun 2023 | ||
| 1.0 | 16 Mar 2021 | 16 Mar 2021 | ||
| 1.0 | 06 Nov 2020 | 06 Nov 2020 | ||
| 3.0 | 13 Jun 2023 | 13 Jun 2023 | ||
| 1.0 | 22 Jun 2023 | 22 Jun 2023 |
勘误手册 (1)
| 资源标题 | 版本 | 更新时间 | ||
|---|---|---|---|---|
| 3.0 | 02 Oct 2020 | 02 Oct 2020 |
工具/软件相关的应用笔记 (3)
| 资源标题 | 版本 | 更新时间 | ||
|---|---|---|---|---|
| 1.0 | 30 May 2023 | 30 May 2023 | ||
| 3.0 | 30 Aug 2023 | 30 Aug 2023 | ||
| 1.0 | 03 May 2022 | 03 May 2022 |
宣传册 (2)
| 资源标题 | 版本 | 更新时间 | ||
|---|---|---|---|---|
| 1.0 | 18 May 2021 | 18 May 2021 | ||
| 1.0 | 14 Sep 2020 | 14 Sep 2020 |
手册 (2)
| 资源标题 | 版本 | 更新时间 | ||
|---|---|---|---|---|
| 1.1 | 02 Nov 2022 | 02 Nov 2022 | ||
| 1.2 | 11 Nov 2022 | 11 Nov 2022 |
白皮书 (1)
| 资源标题 | 版本 | 更新时间 | ||
|---|---|---|---|---|
| 1.0 | 30 Oct 2023 | 30 Oct 2023 |
EDA符号、封装和3D模型
STMicroelectronics - ST25R3920
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符号
封装
3D模型
质量与可靠性
样片和购买
| 产品型号 | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | 封装 | 包装类型 | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | 温度（ºC） | Free Samples | ESample Max Qty | Operating Temperature (°C) (min) | Free Samples | ESample Max Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||||||||
| ST25R3920-AQWT | | | distributors 无法联系到经销商，请联系我们的销售办事处 | VFQFPN 5X5X1 32L WETTABLE FLANKS | Tape and Reel | THAILAND | EAR99 | NEC | -40 | 105 | Yes | 3 | -40 | Yes | 3 | |||
ST25R3920-AQWT 批量生产