NFC module
  
   Technical Parameters
   
    
  
  
   
    
     
      | Item | 
      Parameter | 
     
     
      | Support the Card | 
      Mifare desfire, calssic, ultralight, NTAG, etc | 
     
     
      | Data Interface | 
      I2C | 
     
     
      | Working Voltage | 
      DC 3.3V (Optional 5V) | 
     
     
      | Working Current | 
      20mA(Readcard), 1mA(Findcard) | 
     
     
      | Reading Distance | 
      50~70 mm(It depends on the coil of the antenna) | 
     
     
      | Read the Card Delay | 
      100ms | 
     
     
      | Working Temp. | 
      -40ºC - +85ºC | 
     
     
      | Storing Temp. | 
      -40ºC - +85ºC | 
     
     
      | Working Humidity | 
      5% - 95% | 
     
     
      | LED Pilot Lamp | 
      Blue lamp(Optional) | 
     
    
   
   
  
    
   
    Data Format
    
I2C (speed 10k~100k, address 0x91):
   
   
    
     
      
       | Fieldname | 
       Length | 
       Stlcontent | 
       Remarks Content | 
      
      
       | Address | 
       1 | 
       91 | 
       address | 
      
      
       | Data Length | 
       1 | 
       07/0A | 
       The length from the card type to the end of the frame (after responding to the host, it will output a series of data afterwards) | 
      
      
       | Card Type | 
       1 | 
       01 | 
       See type description | 
      
      
       | Card Number Data(ID) | 
       4~7 | 
       EE 98 95 A5 | 
       HEX | 
      
      
       | Check | 
       1 | 
       54 | 
       an exclusive-or check is made from all the bytes of the frame header to the card number data | 
      
      
       | Data Frame Tail | 
       1 | 
       0D | 
       The fixed frame tail | 
      
     
    
    
   Card Type Description:
   
    
     
      
       | Code | 
       Card Type | 
      
      
       | 0X01 | 
       Mifare Ultralight(MF0) | 
      
      
       | 0X02 | 
       Mifare Clasic(S50,S70) (MF1) | 
      
      
       | 0X03 | 
       Mifare Pro(MF2) | 
      
      
       | 0X04 | 
       Mifare Desfire(MF3) | 
      
      
       | 0X05 | 
       NTAG | 
      
      
       | 0X06 | 
       Being added ...... | 
      
     
    
    
     

