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JMY505 series are RFID reader/writer module with UART and IIC serial ports. JMY505 has various functions and supports multi ISO/IEC standard of contactless card; the cards from different suppliers. The RF protocol is complex. But the designer combined some frequent used command of RF card and then user could operate the cards with full function by sending simple command to the module through IIC or UART interface. And the module and antenna are separate design. The impedance between RF module and antenna was tuned by impedance analyzer. And then the module has excellent performance and stability. The module and antenna is linked by 50ohm coaxial line. The performance is good, though the wire can reach 10m. Normally the wire should be 60cm that is the module's best performance and stability.

Qualifications:
PCD: MF RC500, RC531, RC632, RC400
Working frequency: 13.56MHz
Antenna connection: by 50ohm coaxial line, (recommend 60cm, Max. 10 meters), due to order
RF standard: ISO14443A, ISO14443B, ISO15693
Operating distance: 100mm(depending on card and antenna design)
Anti collision ability: Full function anti collision; be able to process multi-cards simultaneously; be able to set operate single card only
EEPROM: 512 Bytes
Interface: IIC & UART (selected by SPS pin, recommend to use IIC)
Communication rate: IIC--400Kbps, UART--19.2Kbps/115.2Kbps
Max.command length: 511 Bytes
Interface level: 3.3V(TTL level; 5V tolerance)
Power supply: DC 5.0V
Power consumption: 70mA
Dimension: 42mm*21mm*8mm
Package: DIP32
Weight: about 15g
Operating temperature: -25 ~ +85 centigrade
Storage temperature: -40 ~ +125 centigrade
ISP: Supported
RoHS: Compliant