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Automotive high performance NFC reader for CCC digital key and car center console
VFQFPN32Manufacturer:
Mfr.Part #:
ST25R3920B-AQWT
Datasheet:
Series:
Automotive, AEC-Q100, ST25R
Type:
RFID Reader/Transponder
Frequency:
13.56MHz
Standards:
FeliCa, NFS
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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.
Category | RF and WirelessRFID, RF Access, Monitoring ICs | Series | Automotive, AEC-Q100, ST25R |
Type | RFID Reader/Transponder | Frequency | 13.56MHz |
Standards | FeliCa, NFS | Interface | I²C, SPI |
Voltage - Supply | 2.6V ~ 5.5V | Operating Temperature | -40°C ~ 105°C |
Mounting Type | Surface Mount, Wettable Flank | Base Product Number | ST25 |
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