{"product_id":"pn532-nfc-rfid-module-built-in-antenna-i2c-spi-hsu","title":"PN532 NFC RFID Module Built-in Antenna I2C SPI HSU","description":"\n\u003ch2\u003ePN532 NFC RFID Read\/Write Module – Built-in Antenna, I2C \/ SPI \/ HSU\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003ePN532 NFC RFID CV3 Module\u003c\/strong\u003e is a compact, versatile near-field communication board designed for makers, hobbyists, and electronics enthusiasts. Whether you're building a smart access system, automating a home project, or experimenting with contactless card technology, this module delivers reliable performance straight out of the box.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated Onboard Antenna\u003c\/strong\u003e – No external coil required; stable, consistent card-reading performance right away.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTriple Interface Support\u003c\/strong\u003e – Seamlessly switch between \u003cstrong\u003eI2C, SPI, and HSU (UART)\u003c\/strong\u003e communication modes to suit any microcontroller or development board.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Card Compatibility\u003c\/strong\u003e – Works with a wide range of RFID IC cards including Mifare Classic (1K\/4K), Mifare Ultralight, NTAG series, and more.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Recognition Response\u003c\/strong\u003e – Quick NFC tag and card detection keeps your projects snappy and responsive.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePN532 Chip\u003c\/strong\u003e – Industry-standard NXP PN532 controller chip for proven, dependable NFC\/RFID operations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Form Factor\u003c\/strong\u003e – Dimensions of approximately 4.32 × 4.1 cm (1.7 × 1.61 in); lightweight and easy to integrate into enclosures or breadboards.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBeginner-Friendly\u003c\/strong\u003e – Low development and debugging threshold; widely supported by Arduino, Raspberry Pi, and other popular platforms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip:\u003c\/strong\u003e NXP PN532\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Frequency:\u003c\/strong\u003e 13.56 MHz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCommunication Interfaces:\u003c\/strong\u003e I2C, SPI, HSU (selectable via DIP switches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupported Standards:\u003c\/strong\u003e ISO 14443A\/B, MIFARE, FeliCa, ISO\/IEC 18092 (NFC)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e 3.3V – 5V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e ~4.32 × 4.1 cm \/ 1.7 × 1.61 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAntenna:\u003c\/strong\u003e Built-in PCB antenna\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat Can You Build With It?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSmart door locks and access control systems\u003c\/li\u003e\n  \u003cli\u003eContactless attendance or time-tracking systems\u003c\/li\u003e\n  \u003cli\u003eNFC tag reading and writing projects\u003c\/li\u003e\n  \u003cli\u003eDIY smart home automation triggers\u003c\/li\u003e\n  \u003cli\u003eRFID card duplication and testing tools\u003c\/li\u003e\n  \u003cli\u003eInteractive Arduino \/ Raspberry Pi experiments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × PN532 NFC RFID CV3 Module with Built-in Antenna\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor additional guidance on RFID and NFC technology standards, visit the \u003ca href=\"https:\/\/www.nist.gov\/topics\/identity-access-management\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eNIST Identity \u0026amp; Access Management resource page\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What communication interfaces does the PN532 NFC RFID module support?\u003c\/h4\u003e\n\u003cp\u003eA: The PN532 NFC RFID CV3 Module supports three communication interfaces — \u003cstrong\u003eI2C, SPI, and HSU (UART)\u003c\/strong\u003e — selectable via onboard DIP switches. This makes it compatible with a wide variety of microcontrollers and development boards, including Arduino, Raspberry Pi, ESP32, and more.\u003c\/p\u003e\n\u003ch4\u003eQ: Does the PN532 module need an external antenna?\u003c\/h4\u003e\n\u003cp\u003eA: No. The module features a \u003cstrong\u003ebuilt-in PCB antenna\u003c\/strong\u003e, so no external coil or antenna is required. Simply connect it to your development board and start reading or writing NFC\/RFID tags immediately.\u003c\/p\u003e\n\u003ch4\u003eQ: Which RFID and NFC card types are compatible with this module?\u003c\/h4\u003e\n\u003cp\u003eA: The PN532 module is compatible with a broad range of cards and tags operating at 13.56 MHz, including \u003cstrong\u003eMifare Classic 1K\/4K, Mifare Ultralight, NTAG213\/215\/216\u003c\/strong\u003e, FeliCa cards, and ISO 14443A\/B compliant tags — making it ideal for most NFC\/RFID DIY projects.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this module suitable for beginners?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The PN532 is one of the most well-documented NFC controller chips available, with extensive library support for Arduino and Raspberry Pi. Its low setup threshold and broad community resources make it an excellent choice for both beginners and experienced developers.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What communication interfaces does the PN532 NFC RFID module support?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The PN532 NFC RFID CV3 Module supports three communication interfaces — I2C, SPI, and HSU (UART) — selectable via onboard DIP switches. This makes it compatible with a wide variety of microcontrollers and development boards, including Arduino, Raspberry Pi, ESP32, and more.\"}}, {\"@type\": \"Question\", \"name\": \"Does the PN532 module need an external antenna?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. The module features a built-in PCB antenna, so no external coil or antenna is required. 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