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ST25R3920-AQWT

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

Supply Voltage Min Volt2.4
Supply Voltage Max Volt5.5
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius105.0
ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
RoHs compliantEcopack2
GradeAutomotive
Package NameVFQFPN 5X5X1 32L WETTABLE FLANKS

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...
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Key features
  • 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
  • Key features
    • 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
In stock
Quantity $ per unit Savings
1-9$5.250%
10$4.818%
Contact sales
$5.25
$5.25
Supply Voltage Min Volt2.4
Supply Voltage Max Volt5.5
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius105.0
ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
RoHs compliantEcopack2
GradeAutomotive
Package NameVFQFPN 5X5X1 32L WETTABLE FLANKS

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...
Read More

Key features
  • 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
  • Key features
    • 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