5V 13.56mhz RFID IC Card Reader Module Wiegand Uart Interface ISO14443A/B

Description:
Voltage DC 3.3-5V
current 40mA
support :13.56MHz card(ISO14443A/B) or

Dual frequency:125kHz and 13.56MHz card(ISO14443A/B)
interface: wiegand UART
small size 47mm (length) * 26mm (width) * 5mm (thickness) (including antenna) is convenient to embed
industrial grade products-35 degrees to 85 degrees

application:
attendance fingerprint reader module
entryphone card reader module
the interface instructions:
5v D1 D0/TXD GND CST

power supply DC 5V power supply, choose linear power supply can get better card reading effect

D1 WG output DATA1,DATA0

DATA0 or Uart module output by D0/TXD WG this pin is serial port data output

CST W26/34 format selection (hanging means W26, grounding means W34) also has other functions

Wiegand interface output:

when a card is activated, the card serial number is output through the data lines Data0 and data1.
Data0 and Data1 are both high when there is no data output.
Data bit 0 generates a low level with a width of 400US on the Data0 line.
Data bit 1 generates a low level of 400US width on the Data1 line.
The length of each bit of data is 2400us
each miget card has a serial number of 4 bytes, and we output the last three bytes.
Add the first 12-bit parity check bit to the front, and add the last 12-bit parity check bit to the back, a total of 26 bits of data.
The card number is: 6B 3D 12 D6
output data: 3D 12 D6

Weigand 26 encoding:

Weigand 34 encoding:

Uart interface output introduction:

baud rate: 9600

the card types are:

0x02 EM4100

0x01 M 1K

for example, the data received by the serial port tool is 02 09 02 04 2E 53 82 F0 03

the first word section 0x 02 indicates the start of the data.

The 2nd character section 0x 09 indicates that the length of the whole data is 9 bytes, including the start and end of the data.

The 3rd character 0x02 indicates that the card type is EM4100.

The 4th byte to the 7th byte (0x04 0x2E 0x53 0x 82) these 4 bytes represent the read card number.

The 8th word section 0xF0 represents the BCC verification from the 2nd byte to the 8th byte.

The ninth character section 0x03 indicates the end of the data.