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ST25R3915

STMicroelectronics
Part Number ST25R3915
Manufacturer STMicroelectronics
Description Automotive high performance reader / NFC initiator
Published Jun 13, 2019
Detailed Description ST25R3914 ST25R3915 Automotive high performance HF reader / NFC initiator with 1 W output power supporting AAT Datasheet...
Datasheet PDF File ST25R3915 PDF File

ST25R3915
ST25R3915

Overview
ST25R3914 ST25R3915 Automotive high performance HF reader / NFC initiator with 1 W output power supporting AAT Datasheet - production data QFN32 / VFQFPN32 Features • AEC-Q100 qualified • ISO 18092 (NFCIP-1) Active P2P • ISO14443A, ISO14443B, ISO15693 and FeliCa™ • Support HBR up to 848 kbit/s PICC to PCD and PCD to PICC framing • Capacitive sensing - Wake-up • Automatic antenna tuning system providing tuning of antenna LC tank (ST25R3914 only) • Automatic modulation index adjustment • AM and PM demodulator channels with automatic selection • Up to 1 W in case of differential output • User selectable and automatic gain control • Transparent and Stream modes to implement MIFARE™ Classic compliant or other custom protocols • Possibility of driving two antennas in single ended mode • Oscillator input capable of operating with 13.
56 or 27.
12 MHz crystal with fast start-up • 6 Mbit/s SPI with 96 bytes FIFO • Wide supply voltage range from 2.
4 to 5.
5 V • Wide temperature range: -40 °C to 125 °C • ST25R3914: VFQFPN32, 5 mm x 5 mm package with wettable flanks • ST25R3915: QFN32, 5 mm x 5 mm package Description The ST25R3914/5 are highly integrated NFC initiators / HF reader ICs for automotive applications, AEC-Q100 grade 1 qualified, including the analog front end (AFE) and a highly integrated data framing system for ISO 18092 (NFCIP-1) initiator, ISO 18092 (NFCIP-1) active target, ISO 14443A and B reader (including high bit rates), ISO 15693 reader and FeliCa™ reader.
Implementation of other standard and custom protocols like MIFARE™ Classic is possible using the AFE and implementing framing in the external microcontroller (Stream and Transparent modes).
The ST25R3914/5 are positioned perfectly for the infrastructure side of the NFC system, where users need optimal RF performance and flexibility combined with low power.
Thanks to automatic antenna tuning (AAT) technology, the devices are optimized for applications with directly driven antennas.
The ST25R3914/5 are alone ...


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