ST25R3917-AQWT

ST25R3917-AQWT is a high performance NFC forum reader. This NFC IC is optimized for POS terminal applications. It enables the fastest EMVCo 3.0 certification cycles possible, even under harsh conditions, with antenna around noisy LCD display. It contains a low power capacitive sensor to detect the presence of a card without switching on the reader field. It also contains a low power RC oscillator and wake-up timer to automatically wake-up the reader after a selected time period and check for a presence using one or more low power detection of card (capacitive, phase or amplitude). This EMVCo reader is widely used in applications like NFC forum compliant NFC universal device, EMVCo 3.0 compliant contactless payment terminal, ISO14443 and ISO15693 compliant general purpose NFC device, FeliCa™ reader/writer, support of all five NFC forum tag types in reader mode, support all common proprietary protocols, such as Kovio, CTS, B’.

• Operating temperature range from -40°C to 105°C
• Case style is 32-pin VFQFPN (5 x 5mm) with wet table flanks
• Supply voltage range from 2.6V to 5.5V
• Dynamic power output (DPO) controls the field strength to stay within given limits
• Active wave shaping (AWS) reduces overhand under-shoots
• Automatic antenna tuning (AAT) via variable capacitor
• 512-byte FIFO, serial peripheral interface (SPI) upto 10Mbit/s
• Quartz oscillator capable of operating with 27.12MHz crystal with fast start-up
• Active and passive peer to peer initiator and target modes, up to 424 kbit/s
• Low power capacitive and inductive card detection