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参数资料
| 型号： | USB-RS485-PCBA |
| 厂商： | FTDI, Future Technology Devices International Ltd |
| 文件页数： | 2/17页 |
| 文件大小： | 0K |
| 描述： | MOD USB RS485 EMBEDDED CONV PCB |
| 产品培训模块： | USB-UART Interface Solutions |
| 产品目录绘图： | TTL-232R |
| 标准包装： | 10 |
| 系列： | USBmadeEZ-UART |
| 类型： | USB 至 RS-485 |
| 连接器类型： | USB-A 至 PCB |
| 产品目录页面： | 633 (CN2011-ZH PDF) |
| 其它名称： | 768-1043 |
Document Reference No.: FT_000120
USB to RS485 UART Serial Converter PCB Datasheet
Version 1.2
Clearance No. FTDI#80
1
Description
The USB-RS485-PCB is a USB to RS485 level serial UART converter PCB incorporating FTDI?s FT232RQ
USB to Serial UART interface IC device which 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-PCB contains a small internal electronic circuit board, utilising the FT232R plus a USB
type-A connector. The FT232R datasheet, DS_FT232R, is available at http://www.ftdichip.com. The
integrated electronics also include an RS485 transceiver plus Tx and Rx LEDs which give a visual
indication of UART traffic.
The PCB is USB powered and USB 2.0 full speed compatible. Each PCB supports a data transfer rate up to
3 Mbaud 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. Further information and examples on this feature are available at http://www.ftdichip.com under
The USB-RS485-PCB requires USB drivers, available free from http://www.ftdichip.com , 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 (for example TTY). Another
FTDI USB driver, the D2XX driver, can also be used with application software to directly access the
TTY
USB-RS485-PCB
USB
RS485 UART
SIGNALS
Virtual COM Port
TTY
USB-RS485-PCB
USB
RS485 UART
SIGNALS
Software application access to USB via D2XX
Figure 1.1 Using the USB-RS485-PCB
Copyright ? 2011 Future Technology Devices International Limited
1
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