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 200 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: 125 kHz
Data transmission modulation reader to card: AM
Data transmission modulation card to reader: AM
Pinout 8-Pin Mini-DIN plug and Signal Descriptions
Pin Name Type Description
1 PWR Power 5V Power Supply
2 TXD Output RS232-data from reader
3 RXD Input RS232-data to reader
4 RED Input LED red (when LED green is low)
5 GRN Inpur LED green (when LED red is low)
6 - - Not connected
7 /SPKR Input Speaker enable (active low)
8 GND Power Signal and Power Ground
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.
Temperature
Operating temperature range: 0…35°C
Storage temperature range: -20…+60°C
Thermal shock: 30°C/min maximum dT/dt