STMICROELECTRONICS ST25R3918-AQET RFID, Read, Write, 13.56 MHz, 2.4 V to 5.5 V, -40 to 125 °C, UFQFPN-32

ST25R3918-AQET is a multi-purpose NFC transceiver. This multipurpose NFC transceiver supports an NFC reader, passive peer-to-peer functionality, and NFC card emulation mode. This IC is optimized for IoT and other consumer or industrial applications where excellent analogue performance is required. It is used in applications such as general consumer electronics, IoT as well as NFC applications e.g. accessory recognition and parameter setting, brand protection, access control, customer interaction and consumer engagement, healthcare, gaming, beauty, power tools, enhanced user experience starting Apple® app clips and Android� Instant App via CE mode, ISO14443 and ISO15693 compliant general purpose NFC device, contactless interface for programming and firmware updates, support of NFC forum tag types 1, 2, 4, and 5 in reader mode, support of common proprietary protocols, such as MIFARE®, Kovio, CTS, B.

• Reader/writer, card emulation, passive peer to peer
• Low level modes to implement MIFARE Classic® compliant or other custom protocols
• Dynamic power output (DPO) controls the field strength to stay within given limit
• Noise suppression receiver (NSR) allows reception in noisy environment
• Measurement of antenna voltage amplitude and phase, RSSI, on-chip supply and regulated voltages
• 512-byte FIFO, serial peripheral interface (SPI) upto 10Mbit/s
• Possibility to drive two independent single ended antennas
• Low power capacitive and inductive card detection, low power NFC passive target modes
• Quartz oscillator capable of operating with 27.12MHz crystal with fast start-up
• Ambient temperature range from -40°C to 105°C, 32-pin UFQFPN package