December 2017 DocID029132 Rev 3 1/25
1
UM2042
User manual
Discovery kit for the ST25R3911B
high performance HF reader / NFC initiator
Introduction
The ST25R3911B-DISCO is a ready-to-use development kit to evaluate the functions of the
high performance HF reader / NFC initiator ST25R3911B in Reader mode for contactless
applications.
The ST25R3911B-DISCO kit supports
• ISO 18092 (NFCIP-1) active P2P
• ISO 14443A and ISO14443B
• ISO 15693
• FeliCa™
• VHBR, with 6.8 Mbit/s PCD to PICC framing and 3.4 Mbit/s PICC to PCD framing
• Up to 1.4 W output power with differential antenna
• Possibility of driving two antennas in single ended mode, with automatic antenna tuning
(AAT) system
• Inductive and capacitive Wake-up
• User selectable and automatic gain control
• Transparent and Stream modes to implement MIFARE
®
Classic compliant or other
custom protocols
The evaluation kit includes
• the STM32L476RET6, a 32-bit microcontroller with 512 KB of Flash memory
• a 105 mm x 52 mm, two turns antenna etched on the PCB, and its VHBR tuning circuit
• a Micro-USB connector for communication with the host PC and board powering
• six LEDs indicating the presence of the RF field and of the protocol used to communicate.
Figure 1. ST25R3911B-DISCO PCB (top view)
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