Description
JMY**4 series are RFID reader/writer module with UART and IIC
serial ports. JMY**4 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 separate
design. 4 wires are linked the antenna and module. Normally the
wire should be less than **0mm, or it will affect the module's
performance and stability.
Qualifications:
PCD: NXP RC**2, RC**3
Working frequency: *3.*6MHz
RF standard: ISO****3A, ISO****3B
Operating distance: *0mm(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
Auto detecting card: Supported, default
OFF
EEPROM: **2 Bytes
Interface: IIC & UART (selected by SPS
pin, recommend to use IIC)
Communication rate: IIC **0Kbps, UART
*9.2Kbps/**5.2Kbps
Max.command length: **4 Bytes
Interface level: 3.3V(TTL level; 5V
tolerance)
Power supply: DC 5.0V
Power consumption: *0mA
Dimension: *2mm×*1mm×8mm
Package: DIP*2
Weight: about *5g
Operating temperature: **5 ~ **5 ℃ (**7
~ ***5°F)
Storage temperature: **0 ~ ***5 ℃ (***4
~ ***7°F)
ISP: Supported
RoHS: Compliant
