<h1>NFC ACS: Advanced Contactless Solutions for Modern Applications</h1> <p>In today's rapidly evolving digital landscape, <strong>NFC ACS</strong> (Near Field Communication Access Control Systems) have become integral to secure and convenient interactions. From personal access management to innovative product integrations, the applications are vast and growing. I recall my first encounter with a sophisticated <strong>NFC ACS</strong> was at a tech conference, where a single card granted access to sessions, made payments at vendor booths, and even served as a digital business card. The seamless experience profoundly shaped my view on integrated wireless technologies.</p> <h2>Technical Specifications and Parameters of TIANJUN NFC ACS Modules</h2> <p>For developers and integrators, understanding the underlying hardware is crucial. TIANJUN provides robust <strong>NFC ACS</strong> modules designed for high-performance applications. Below are the detailed technical indicators and parameters for a flagship module, the TJ-NFC-ACS210.</p> <h3>Core Technical Parameters</h3> <ul> <li><strong>Chipset:</strong> NXP PN7150 or equivalent secure element.</li> <li><strong>Operating Frequency:</strong> 13.56 MHz (ISO/IEC 14443 A/B, ISO/IEC 15693, FeliCa compliant).</li> <li><strong>Communication Interface:</strong> I2C (Standard mode: 100 kHz, Fast mode: 400 kHz), SPI, HSU (High-Speed UART).</li> <li><strong>Operating Voltage:</strong> 2.7V to 5.5V DC.</li> <li><strong>Operating Current:</strong> Typical 40mA during active RF communication; Sleep mode: < 15µA.</li> <li><strong>Read/Write Distance:</strong> Up to 50mm (dependent on antenna design and tag type).</li> <li><strong>Data Transmission Rate:</strong> Up to 848 kbit/s.</li> <li><strong>Supported Protocols:</strong> NFC-A, NFC-B, NFC-F, NFC-V; Reader/Writer, Peer-to-Peer, Card Emulation modes.</li> </ul> <h3>Detailed Physical Dimensions and Antenna Design</h3> <ul> <li><strong>Module Dimensions (LxWxH):</strong> 25.0mm x 20.0mm x 2.4mm.</li> <li><strong>Antenna Coil Specifications:</strong> Integrated 4-layer PCB antenna, inductance of 1.0µH ±5%, Q-factor > 30 at 13.56 MHz.</li> <li><strong>Connector:</strong> 20-pin, 1.27mm pitch castellated hole design for direct SMT mounting.</li> </ul> <p><em>Note: These technical parameters are for reference data. For the most accurate, up-to-date datasheets, firmware APIs, and customization