RC522 RFID IC(give away S50 fudan card,key ring and provide arduino development code )

[Brief introduction to RC522 Chip]The MFRC522 is a highly integrated reader/writer IC for contactless communicationat 13.56 MHz. This contactless reader/writer IC is of low-cost, low voltage and small-size and is designed for the application of water meter, electricity meter and gas meter. It¡¯s a good choice for intelligent instrument and portable device development. MF RC522 adopts advanced modulation and demodulation theory and has integrated all types of passive contactless communication mode and protocols at 13.56 MHz. It supports compatible 14443A transponder signal. The digital part deals with ISO14443A frame and error inspection. It also supports CRYPT01 encryption algorithm for verify MIFARE products. MFRC522 supports faster contactless communication such as MIFARE. The bidirectional data transfer rate is as high as 424kbit/s. As a new member in 13.56 MHz highly integrated reader/writer IC, MF RC522 bears many similarities with MF RC500 AND MF RC530 as well as different features. MF RC522 adopts SPI mode for communication with host machine, which helps to simplify wiring and downsize PCB board, thus reducing product cost.[Brief introduction to RFID module]MF522-AN module adopts original Philips MFRC522 IC for reader circuit designation. It target client are those engaged in device development, reader development, RF card designation/production. This module can be inserted directly into various readers, which is very convenient to use and cost-effective. The module adopts 3V voltage and can be connected to any CPU motherboard through several lines in SPI interface, ensuring normal operation of the module and a long card-read distance.Specification:Working current: 13 - 26mA/ DC 3.3VIdle current: 10-13mA/ DC 3.3VSleep current: <80uAPeak current: <30mAWorking frequency: 13.56MHzCard type: Mifare1 S50 Mifare1, support S70, Mifare UltraLight, Mifare Pro, Mifare DesfireProduct physical features: size: 40mm x 60mmoperating temperature: -20 - 80 degrees Celsiusstorage temperature: -40 - 85 degrees CelsiusRelative humidity: 5% - 95%SPI parameters of module interface SPIData transmission speed: MAX.:10 Mbit/s