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The ST25R3920B NFC reader for automotive use is a high performance NFC general purpose device supporting NFC initiator, NFC receiver, NFC reader and NFC card emulation modes. Designed for use in CCC (Car Connectivity Consortium) digital key applications, it enables rapid product development for automotive access and initiation applications. The device also has additional features such as pairing or NFC card protection and a Qi charger. The device has very strong noise immunity, while reducing electromagnetic emissions and operating even under harsh conditions, simplifying certification.

The ST25R3920B includes an Advanced Analogue Front End (AFE) and a highly integrated data group framing system for ISO18092 passive and active initiators, ISO18092 passive and active receivers, NFC-A/B (ISO14443A/B) readers with higher bit rates, NFCF (FeliCa™) readers, up to Special stream and transparent modes for AFE and frame systems can be used to implement other custom protocols in reader or card emulation mode.

With its high RF power and dynamic power output, the ST25R3920B can drive antennas directly and efficiently, enabling long interaction distances even with the small antenna sizes commonly found in door handles. The device is also energy efficient, making it ideal for low power applications. the ST25R3920B provides low power card detection by measuring the amplitude or phase of the antenna signal, while minimising power consumption.

The ST25R3920B is designed to operate over a wide supply range of 2.6V to 5.5V and a wide peripheral IO voltage range of 1.65V to 5.5V.

The ST25R3920B automotive NFC reader is available in a VFQFPN32 package with wettable flanks for easy automatic optical inspection (AOI). The device is AEC-Q100 compliant and can be used in automotive applications.

Product parameters.

Type: RFID reader/responder

Frequency: 13.56MHz

Standards: FeliCa, NFS

Interface: I²C, SPI

Supply voltage: 2.6V~5.5V

Operating temperature: -40°C~105°C

Mounting Type: Surface mount, wet side available

Package / Enclosure: 32-VFQFN exposed liner

Vendor device package: 32-VFQFPN (5x5)

Product Applications.

Vehicle door opening and closing

Vehicle start-up

NFC card protection on centre console Qi chargers

Mobile phone pairing and data transfer

Consumables identity verification

On-board payment

• 1.Is the inventory and price seen on the platform accurate?

  A: all online goods on the shelves can be ordered online, but considering the large liquidity of spot inventory, it is not possible to achieve 100% accuracy at present. In case of any abnormality, you can contact our company online and give the corresponding solution.

• 2.Are all our products genuine?

  A: our self-supporting products are from cooperative domestic and foreign original factories or authorized agents, and the source can be traced to ensure the original and authentic products.

• 3.Can you provide the qualification certificate of the original factory or agent?

  A: at present, our self-employed brands TI，ST，ADI，NXP，LATTICE，CYPRESS，INFINEON，XILINX and other first-line brands. Other channels are the original factory and agency channels. If necessary, we can communicate and confirm according to the specific brand and model.

• 4.Can I make an inquiry through the company's website?

  A: You can inquire through the website, or by phone and email.

• 5.When can I deliver the goods after placing an order? How long will it take to get there?

  A: the delivery date is marked in most commodity information. You can estimate the delivery time of the commodity according to the delivery date. The specific arrival time depends on the warehouse where the commodity is located and the logistics mode you choose.

• 6.Can the company issue an invoice?

  A: you can issue ordinary invoices for individual users or special VAT invoices for enterprise users.