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Contactless Card Read/Write Module
(
YW-201
)
User’s Manual
☞
Communication Protocol:
1. UART: Baud Rate 19200bps。
2. IIC:Max rate 400Kbps。
☞
Auto request card: When the card put into antenna, the pin
“
CARDIN
”
will be low.
☞
Package: DIP32.
☞
Power supply :+4.5~+5.5V.
☞
Read Card distance 5~10cm.(Depend on the antenna)
☞
You can get C51 source code example with theh module.
4
Function specification
4.1 Pin Function
Pic 1
Pin function
[
Table
1
]:
Pin
Function
Description
1
RX Antenna
Receive
2
TGND
Antenna GND
12
NC Not
Use
13
NC Not
Use
14
CARDIN
Card In/Out Indicate(Only when auto request)
0:Card In. 1:Card Out.
15
TXD/SDA
UART TXD/ IIC SDA
16
RXD/SCL
UART RXD/ IIC SCL
17
VCC +5V
VCC
Contactless Card, RFID… Page 4 / 15
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