rfid-7304d2.md 2.2 KB

Dual Frequency RFID Reader/Writer Wireless Module 5cm ISO14443A EM4100

rfid back

Cost: $10

Features
Power DC 5-15V
Operating Current max < 100mA
Operating Frequency 13.56MHz+/-5KHz; 125KHz
Support common ISO14443A protocol
Support EM4100 and its compatible card
Card Reading Distance IC>5cm; ID>5cm
1 channel Wiegand data output port, support WG26, WG34 multiple format to choose
Card sensor speed is lower than 100ms
1 channel LED control input
1 channel BUZ control input
Size 74*115*16mm
Operating Temperature -20~60 Celsius
Operating Humidity 10%-95%
Pin Color Name Description
1 Red VCC Power Input Port
2 Brown FOR Wiegand Format Selection
3 Blue none Undefined
4 Yellow BUZ Buzzer Control
5 Orange LED LED Control
6 Green D1 Wiegand Output
7 White D0 Wiegand Output
8 Black GND Power Ground
ISO14443 TYPE A
NXP_Mifare 1K
NXP_Mifare 4K
NXP_Mifare mini
Ultralight(C)
Mifare PlusX(S)
Desfire D21 D41 D81
NTAG203(F)
125KHZ
EM4100
EM4200
JT120

Data Output Format

When it sensors the card, the serial number will be output via Data 0, Data 1 two data wire.

Data 0 and Data 1 are high level when there is no data output.

Logic Definition:

  • Data Bit 0: it will generate 200us low level on Data 0 wire
  • Data Bit 1: it will generate 200us low level on Data 1 wire

Every data length is 2200us

Every Mifare card has a serial number with 4 bytes, users should output the last three bytes.

Add the first 12-bit even check bit in the front and add the last 12-bit odd check bit in the back, 26-bit data in total.

For example:

  • Card number is 6B 3D 12 D6
  • Output data is 3D 12 D6

Wiegand26 Encode

0 00111101 00010010 11010110 1
Even Check 3D 12 D6 Odd Check

Reference