产品概述
描述
ST25R100多用途NFC收发器以小巧的4x4 mm封装提供高端性能，为各种终端应用带来非接触式交互的便利性和丰富的功能。这款产品针对消费和工业领域的终端产品进行了专门优化。
ST25R100支持NFC读卡器/写卡器模式。高输出功率确保了它能轻松集成到带有小型天线的应用中。该读卡器具有出色的读取范围，并且配有改进的低功耗卡检测 (LPCD) 功能，可在感应唤醒模式下增大检测范围。在这种低功耗唤醒模式下，系统能够检测标签的接近或移除。IC中包含RC振荡器和可编程定时器，可在唤醒模式下自动扫描卡片或其他支持NFC功能的设备，如智能手表或手机。
得益于意法半导体的噪声抑制接收器 (NSR) 技术，ST25R100拥有超高的灵敏度，即使在嘈杂环境下也能成功读取。
此IC包括高级模拟前端 (AFE) 和高度集成的数据成帧系统，可用于根据NFC-A/B (ISO 14443A/B) 和NFC-V (ISO 15693) 标准进行读卡。AFE的透传模式可用于在读卡器模式下实现其他自定义协议。
ST25R100采用小巧的4x4 mm 24引脚TQFN封装，支持在小型设备中轻松集成NFC技术。
ST25R100的运行条件如下：宽电源电压范围（2.7 V至5.5 V）、宽外设IO电压范围（2.7 V至5.5 V）和宽环境温度范围（-25 °C至+85 °C）。
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所有功能
- 工作模式
- 读卡器/写卡器
- RF通信
- ISO14443A/NFC-A：106 Kb/s
- ISO14443B/NFC-B：106 Kb/s
- ISO15693/NFC-V：高达53 Kb/s
- NFC Forum T1T、T2T、T4T和T5T标签类型
- 专用协议，如Kovio、CTS、B’
- 底层模式实现了兼容MIFARE Classic®或其他自定义协议
- 主要特性
- 基于感应唤醒的改进低功耗卡检测
- 高输出功率支持动态调节（DPO）
- 可选择连接两根独立的单端天线
- 可调ASK调制深度
- 自动增益控制和静噪功能，可最大限度地提高SNR（信噪比）
- 集成稳压器，可提升系统PSRR
- 测量天线特性（I/Q通道）
- 256字节FIFO
- 外部通信接口
- 高达6 Mb/s的SPI接口
- 电气特性
- 电源电压范围：2.7 V至5.5 V
- 外设通信电压范围：2.7 V至5.5 V
- 天线驱动器电压范围，高达6VP
- 最高支持27.12 MHz晶振以实现快速启动
- 工作模式
eDesignSuite
eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.
Power Management Design Center
Thermal-electrical Simulators for Components
Signal Conditioning Design Tool
NFC/RFID Calculators
Choose design tool: 
Power Management Design Center
Power Supply Design Tool
• SMPS design, by topology, by type and by product
• PFC design with analog and digitial control
• Supports various PCB configurations
Choose type: DC/DC AC/DC 太阳能电池充电器
Power Management Design Center
LED Lighting Design Tool
• Handles AC-DC and DC-DC design in common topologies
• Displays interactive and annotated schematic
• Provides current/voltage graphs, Bode plots, efficiency curves and power-loss data
Choose type: DC/DC AC/DC
Power Management Design Center
Digital Power Workbench
• Provides a step-by-step optimized design of power section and control loop
• Generates the STM32Cube embedded software package for custom applications and allows firmware project generation, compatible with multiple STM32 IDEs
Power Management Design Center
Power Tree Designer
• Specify input/output power for each node in the tree
• Check for consistency
• Design each individual node
Choose design tool: 
Thermal-electrical Simulators for Components
AC Switches Simulator
• Select ratings and application waveforms
• Get junction temperature and blocking voltage graphs
• Search and sort suitable devices
Thermal-electrical Simulators for Components
Rectifier Diodes Simulator
• Select ratings and application waveforms
• Estimate power losses
• Search and sort suitable devices
Thermal-electrical Simulators for Components
STPOWER Studio
• Supports long mission profiles
• Provides power loss and temperature graphs
• Helps define heatsink thermal properties
Thermal-electrical Simulators for Components
Twister Sim
• Help select the right ViPOWER Automotive power device
• Supports load-compatibility, wiring harness optimization, fault condition impact and diagnostic analysis
• Supports various PCB configurations
Thermal-electrical Simulators for Components
TVS Simulator
• Specify system ratings and surge waveform
• Search and sort suitable devices
Thermal-electrical Simulators for Components
Estimate
• Build simple schematics and firmware inputs in minutes
• Quickly generate reliable estimates of battery life, system power consumption and bill of materials costs
Thermal-electrical Simulators for Components
PCB Thermal Simulator
• Thermal analysis of a PCB from Gerber files.
• Possibility to add heat sources, heat sinks, copper areas and thermal paths.
• Powerful server-side engine for rendering and simulation.
• Thermal results shown graphically via 2D table.
Choose design tool: 
Signal Conditioning Design Tool
Active Filters
• Handles multi-stage-designs and common topologies
• Returns circuit component values
• Provides gain, phase and group delay graphs
• Low Pass, High Pass and Band Pass
Signal Conditioning Design Tool
Comparators
• Handles most common configurations
• Returns circuit components values
• Provides I/O signal waveforms
• Inverting, Non Inverting, Window
Signal Conditioning Design Tool
Low side Current Sensing
• Returns circuit component values
• Provides current error graphs
Signal Conditioning Design Tool
High side Current Sensing
• Provides current error graphs.
• Help to select the right High side current sensing and shunt devices.
Choose design tool: 
NFC/RFID Calculators
NFC Inductance
• Input geometry and substrate properties
• Get antenna impedance
NFC/RFID Calculators
UHF Link Budget
• Enter forward and reverse link characteristics
• The tool returns link budget estimate
NFC/RFID Calculators
NFC Tuning Circuit
• Enter antenna parameter and matching target
• Select the topology of the matching network
• The tool returns component values for the desired design targets
