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Recycle ST Evaluation Board:RFID Reader Evaluation Board,NFC Tag Evaluation Board

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【RFID Reader/Writer Evaluation Board Detailed Analysis】

RFID reader/writer evaluation boards form a vital component of the ST evaluation board family. They enable developers to rapidly assemble prototype systems, evaluate chip performance, and accelerate the development process for end products. Below is an introduction to a representative RFID reader/writer evaluation board: STEVAL-25R3916B

STEVAL-25R3916B Evaluation Board

For applications demanding higher performance, the STEVAL-25R3916B evaluation board offers a more robust solution. This kit employs a dual-board collaborative design: the main control board (STEVAL-M25R16B) incorporates a high-performance microcontroller featuring a 32-bit Arm® Cortex™-M4 CPU and FPU, based on the STM32L476 chip; The reader expansion board (STEVAL-D25R16B) incorporates the highly integrated ST25R3916 HF reader/NFC initiator/NFC target IC, complete with an antenna (etched onto the PCB) and associated VHBR tuning circuitry.

The ST25R3916B chip is a high-performance HF reader supporting a wide range of communication protocols and operating modes. It offers significant advantages in RF output, protocol support, and operating modes:

RF Output: 42 dBμA/m @10m (ETSI EN 300 V2.1.1 standard), providing high field strength coverage

Protocol Support: ISO 18092 (NFCIP-1) active and passive initiator and target modes, NFC Forum NFC-A/B/F/V reader, ISO 14443A/ISO 14443B/ISO15693 reader, FeliCa™ reader, and all five NFC Forum tag types

Operating Modes: Supports multiple modes including reader/writer, peer-to-peer, and card emulation, adapting to diverse application scenarios

【Detailed Overview of NFC Tag Evaluation Board】

NFC tag technology plays an increasingly vital role in IoT devices and personal electronics. STMicroelectronics' STEVAL-SMARTAG2 evaluation board delivers a fully-featured NFC sensor node solution integrating inertial MEMS sensors, environmental sensors, an STM32 microcontroller, and a dynamic NFC tag. Designed for communication with NFC readers such as tablets and smartphones, this evaluation board offers optional features including a battery charger powered by a full-wave rectifier for NFC energy harvesting, and a real-time clock (RTC) with an embedded crystal oscillator for precise timing and time-stamping.

ST25DV64KC Dynamic NFC Tag Chip

At the heart of the STEVAL-SMARTAG2 evaluation board lies the ST25DV64KC dynamic NFC/RFID tag chip, featuring 64-Kbit EEPROM and supporting fast transfer mode. Compared to traditional static NFC tags, dynamic NFC tags offer enhanced functionality and flexibility:

Large storage capacity: 64Kbit (8KB) non-volatile memory capable of storing device serial numbers, calibration parameters, firmware versions, and even lightweight certificate information

High durability: Supports up to 100,000 erase/write cycles, ideal for applications requiring frequent data updates

High-speed interfaces: Dual-mode I²C/SPI communication interfaces offer greater flexibility than single-interface solutions

Wide voltage operation: Wide operating voltage range of 2.7V–5.5V accommodates diverse power supply environments