MOD-RFID125 Olimex Ltd., MOD-RFID125 Datasheet - Page 6

• Manufacturer Part Number: MOD-RFID125
• Description: RFID Modules & Development Tools RFID RDR FOR 125KHZ TAGS 50x20x5mm
• Manufacturer: Olimex Ltd.

Specifications of MOD-RFID125

• Operating Current: 120 mA
• Operating Voltage: 5 V
• Product: RFID Readers
• Wireless Frequency: 125 KHz
• Interface Type: USB, UART
• Dimensions: 50 mm x 20 mm x 5 mm
• Kit Features: Base RFID Frequency 125kHz, EM4102 RFID Tags, USB HID Keyboard, USB CDC Serial Port Emulation Mode
• Development Tool Type: Hardware - Module
• Supported Devices: HID Keyboard, CDC
• Tool /: RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 1701545 25R4793

UART MODE:
SWITCHING OPERATING MODES:
In this mode there is no need for USB connection. Instead the device must
be connected via TTL-level UART of a microcontroller system of choice. It
expects the peer to be configured with 9600 bps, 8bit character, no parity,
1 stop bit. The communication is otherwise the same as in USB CDC mode,
but there is no need for USB. Again, all entered characters are echoed back.
MOD-RFID125's signals RxD and TxD are leaded away to pads, which are
shown at the picture below:
From this side of the board, where is the button, are leaded total five
signals: RxD, TxD, LED1, GND and +5V.
TxD – output from MOD-RFID125
RxD – input for MOD-RFID125
LED1 – doubles LED1 command signal.
GND – Ground
+5V - +5V from USB
The current mode of operation can be selected by pressing and holding the
button of the device. After two seconds the LEDs will start to blink and will
show the code for the next selected mode. When button is released, the
device will reboot and enter the selected mode. Selected mode is
remembered between power downs. The assigned codes are: