USB-RS485-PCBA

The USB-RS485-PCBA is an USB to RS485 level serial UART converter PCB incorporating FT232RQ USB to serial UART interface IC device. The FT232RQ handles all the USB signalling and protocols. The PCB provides a fast, simple way to connect devices with a RS485 interface to USB. Each USB-RS485-PCBA contains a small internal electronic circuit board, utilising the FT232R plus a USB type A connector. The integrated electronics also include an RS485 transceiver plus Tx and Rx LEDs which give a visual indication of UART traffic. Each PCB supports a data transfer rate up to 3Mbaud and supports the FTDIChip-ID, with a unique USB serial number programmed into the FT232R. This feature can be used to create a security or password protected file transfer access using the PCB. The USB-RS485-PCBA requires USB drivers, which are used to make the FT232R on the PCB appear as a virtual COM port (VCP). This then allows the user to communicate with the USB interface via a standard PC serial emulation port.

• Entire USB protocol handled by the electronics on the PCB
• EIA/TIA-485 interface with low power requirements
• UART interface support for 7 or 8 data bits, 1 or 2 stop bits and odd/even/mark/space/no parity
• Internal EEPROM with user writeable area
• PCB is USB powered, no external supply required
• X-on/X-off software handshaking
• Low USB bandwidth consumption
• UHCI/OHCI/EHCI host controller compatible
• USB 2.0 full speed compatible
• ESD protection for RS485 I/O's

Applications

Communications & Networking, Sensing & Instrumentation, Industrial, Security, Automotive