USB TO RS485 UARTSERIAL CONVERTER PCB USB-RS485-PCB

Typical Applications
USB to SerialRS485Level Converter.
Upgrading Legacy Peripherals to USB.
Interface Microcontroller UART or I/O to USB.
Interface FPGA / PLD to USB.
USBInstrumentation PC interface.USB Industrial Control.
USB password protected file transfers.
USB-RS485-PCB Connector Pin Out and Mechanical details
USB-RS485-PCB Pin Out (Top is TOP View, Bottom is BOTTOMView
Each USB-RS485-PCB is controlled by the FTDI FT232R IC. This FT232R device contains an EEPROMwhich contains the USB configuration descriptors for that device. When the PCB is plugged into a PC or aUSB reset is performed, the PCwill read these descriptors. The default values stored into the internalEEPROM are defined inTable0.1Default Internal EEPROM Configuration
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Product Description
The USB-RS485-PCBA converter provides a USB to RS485 serial interface with a simple USB type A connector and PCB for easy integration into a design or as the basis of a converter cable.
Features:
Entire USB protocol handled by the electronics in the cable.
UART interface support for 7 or 8 data bits, 1 or 2 stop bits and odd / even / mark / space / no parity.
TIA-485 and V.28/V.24 communication interface with low power requirements.
Internal EEPROM with user writeable area.
Data transfer rates from 300 baud to 3 Mbaud.
Visual indication of Tx and Rx traffic via LEDs in the transparent USB connector.
Extended temperature range (-40oC to +85oC).
based on FT232R Operating systemWindows 8.1 / 8 (32/64-bit), Windows 7 (32/64-bit), Vista (32/64-bit), XP, Server 2003/8R2 (32/64-bit), 2000, ME, 98Se (all WHQL compliant)LinuxMac OS 8, OS 9, OS XWindows CE.NET (Version 4.2 and greater)AndroidProcessorFTDI FT232RLRS485 InterfaceIncluded screw terminal header / single wiresFail-safe bias resistorsYesUSB interfaceStandard Type A MalePorts1-port available for RS485SignalsRS485, 2-wire half duplex: D+, D-, GNDBaud rate300-921.600bps (up to 3kbps by using alising)TX / RX buffer size256 Byte Transmit Buffer / 128 Byte Receive BufferAdjustable USB transfer sizes for TX and RXFrom 64 bytes to 4096 bytesAdjustable latency timer1 to 255 msecAdjustable read and write timeouts0 to 10000 msecFlow ControlNone, Xon/Xoff, HardwareCOM port accessible byIncluded virtual COM port drivers or FTD2XX.DLLSpecial featuresCompatible with Modbus RTU/ASCII, BACnetSupports non-standard baud ratesAutomatic Send ControlElectrostatic (ESD) protection600W surge protection, 15KV static electricity protectionCurrent drawStatic: less than 80mA. Dynamic average: less than 150mAInterface complianceUSB1.1,2.0,3.0, EIA/TIA RS-232Working temp-20°C to 60°C
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