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ST25R3918 Datasheet(PDF) 1 Page - STMicroelectronics |
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ST25R3918 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 141 page  This is information on a product in full production. August 2021 DS13490 Rev 2 1/141 ST25R3918 Multi-purpose NFC transceiver Datasheet - production data Features Operating modes – Reader/writer – Card emulation – Passive peer to peer RF communication – NFC-A / ISO14443A up to 848 kbit/s – NFC-B / ISO14443B up to 848 kbit/s – NFC-V / ISO15693 up to 53 kb/s – NFC-A / ISO14443A and NFC-F / FeliCa™ card emulation – 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 gain control and squelch feature to maximize SNR – Low power inductive card detection – Low power NFC 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 10 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 VFQFPN32 (5x5 mm) www.st.com |
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