Features
• 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
– 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
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

The ST25R3916B and ST25R3917B devices are suitable for a wide range of NFC and HF
RFID applications, among them
• NFC Forum compliant NFC universal device
• EMVCo 3.1a compliant contactless payment terminal
• ISO14443 and ISO15693 compliant general purpose NFC device
• FeliCa™ reader / writer
• Support all five NFC Forum Tag types in reader mode
• Support all common proprietary protocols, such as Kovio, CTS, B’.