User's Manual

Technical Data
DC Electrical Characteristics
Symbol Parameter Condition Min Typ Max Units
Vdd Supply Voltage 4.75 5 5.5 VDC
Idd Supply current 400 mA
Idd1 Peak Supply current Inrush 450 mA
Vih Input high voltage 3.3 Vdd+0.3 V
Vil Input low voltage -0.3 0.8 V
Ii Input leakage
current
300 uA
Additional requirements for the supply voltage: Vripple = 50mVpp max.
RF Characteristics
● Operating frequency: 13.56 MHz
● Data transmission modulation reader to card: ASK
● Data transmission modulation card to reader: ASK/load modulation
Pinout 6-Pin plug connector and Signal Descriptions
Pin Name Type Description
1 TX1 Output RS232-data from reader
2 RX1 Input RS232-data to reader
3 GND Power Ground
4 PWR Power 5V Power Supply
5 - - Not connected
6 - - Not connected
Serial Interface
The TXD/RXD signals are compatible with RS-232 level signals. The interface operates at
2400 baud, no parity, 8 data bits, 1 stop bit. Upon detection of a valid card swipe, the
reader outputs the card number in ASCII format.
2