PN532_NFC Module 1、General Description： The PN532 is a highly integrated transceiver module for contactless communication at 13.56 MHz based on the 80C51 microcontroller core. It supports 6 different operating modes: • ISO/IEC 14443A/MIFARE Reader/Writer • FeliCa Reader/Writer • ISO/IEC 14443B Reader/Writer • ISO/IEC 14443A/MIFARE Card MIFARE Classic 1K or MIFARE Classic 4K card emulation mode • FeliCa Card emulation • ISO/IEC 18092, ECMA 340 Peer-to-Peer The PN532 implements a demodulator and decoder for signals from ISO/IEC 14443A/MIFARE compatible cards and transponders. The PN532 handles the complete ISO/IEC 14443A framing and error detection (Parity & CRC). The PN532 supports MIFARE Classic 1K or MIFARE Classic 4K card emulation mode. The PN532 supports contactless communication using MIFARE Higher transfer speeds up to 424 kbit/s in both directions. The PN532 can demodulate and decode FeliCa coded signals. The PN532 handles the FeliCa framing and error detection. The PN532 supports contactless communication using FeliCa Higher transfer speeds up to 424 kbit/s in both directions. The PN532 supports layers 2 and 3 of the ISO/IEC 14443 B Reader/Writer communication scheme, except anticollision. This must be implemented in firmware as well as upper layers. The PN532 supports the following host interfaces: • SPI • I2C • High Speed UART (HSU) An embedded low-dropout voltage regulator allows the device to be connected directly to a battery. In addition, a power switch is included to supply power to a secure IC. Features and benefits •80C51 microcontroller core with 40 KB ROM and 1 KB RAM •Highly integrated demodulator and decoder •Buffered output drivers to connect an antenna with minimum number of external components •Integrated RF level detector •Integrated data mode detector •Supports ISO/IEC 14443A/MIFARE •Supports ISO/IEC 14443B (Reader/Writer mode only) •Typical operating distance in Reader/Writer mode for communication to ISO/IEC 14443A/MIFARE, ISO/IEC 14443B or FeliCa cards up to 50 mm depending on antenna size and tuning •Typical operating distance in NFCIP-1 mode up to 50 mm depending on antenna size, tuning and power supply •Typical operating distance in ISO/IEC 14443A/MIFARE or FeliCa card emulation mode of approximately 100 mm depending on antenna size, tuning and external field strength •Supports MIFARE Classic 1K or MIFARE Classic 4K encryption in Reader/Writer mode and MIFARE higher transfer speed communication at 212 kbit/s and 424 kbit/s •Supports contactless communication according to the FeliCa protocol at 212 kbit/s and 424 kbit/s •Integrated RF interface for NFCIP-1 up to 424 kbit/s •Possibility to communicate on the RF interface above 424 kbit/s using external analog components •Supported host interfaces •SPI interface •I2C interface •High-speed UART •Dedicated host interrupts •Low power modes •Hard-Power-Down mode (1 A typical) •Soft-Power-Down mode (22 A typical) •Automatic wake-up on I2C, HSU and SPI interfaces when device is in Power-down mode •Programmable timers •Crystal oscillator •2.7 to 5.5 V power supply operating range •Power switch for external secure companion chip •Dedicated IO ports for external device control •Integrated antenna detector for production tests •ECMA 373 NFC-WI interface to connect an external secure IC 3、Appilcation Mobile and portable devices Consumer applications