ST25R3917B
Overview
- Operating modes - Reader/writer - Card emulation - Active and passive peer to peer
- RF communication - EMVCo® 3.1a 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 (106 kbit/s) and NFC-F / FeliCa™ (212/424 kbit/s) 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 overand under-shoots - Noise suppression receiver (NSR) allows reception in noisy environment - Automatic antenna tuning (AAT) via variable capacitor Datasheet - production data - Integrated EMVCo® 3.1a compliant EMD handling - Automatic gain control and squelch feature to maximize SNR - Low power NFC active and passive target modes - Adjustable ASK modulation depth, from 0 to 82% - 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
