User's Manual

4
1.4 Connectors
Picture 1-1
In the Picture 1-1 there are marked connectors available for the user when working with the UART-B1 device. The
connectors used on the UART-B1 are described below.
1.4.1 UART Connectors J1 and J2
The device provides communication and power via UART J1/J2 connectors. The J1 and J2 connectors have a pin spacing
of 2mm and 2.54mm respectively. The user can configure the COM Port with a baud rate up to the maximum allowed
by the RFID B1 module.
Note: The square pad is always pin number 1.
IO and Peripherals
Configuration Header (J3)
UART Connectors (J1/J2)
External Antenna Connector (J10)
External/PCB Antenna Selection
Connectors (J8 and J9)
J1.1, J2.1 – 3V3 – 3.3V Power Supply
J1.2, J2.2 – TX (UART TxD data from the module)
J1.2, J2.3 – RX (UART RxD data to the module)
J1.4, J2.4 – GND – Ground