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參數(shù)資料
| 型號： | FT232BM |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Generation of FTDI’s Popular USB UART I.C. |
| 中文描述： | 在FTDI的流行的USB UART的新一代集成電路 |
| 文件頁數(shù)： | 19/24頁 |
| 文件大?。?/td> | 812K |
| 代理商： | FT232BM |
DS232B Version 1.1 Future Technology Devices Intl. Ltd. 2002
Page 19 of 24
FT232BM USB UART ( USB - Serial) I.C.
Figure 11
USB => RS422 Converter Configuration
FT232BM
PWREN#
SLEEP#
TXD
RXD
RTS#
CTS#
DTR#
DSR#
DCD#
RI#
10
TXDEN
25
24
23
22
15
21
20
19
18
16
DB9-M
TXDM
RXDP
RTSP
CTSP
GND
VCC
SP491
5
4
12
9
3
11
2
10
14
7
6
D
R
5
4
12
9
3
11
2
10
14
7
6
D
R
SP491
VCC
120R
120R
TXDP
RXDM
RTSM
CTSM
Figure 11 illustrates how to connect the UART interface of the FT232BM to a TTL – RS422 Level Converter I.C. to
make a USB -> RS422 converter. There are many such level converter devices available – this example uses Sipex
SP491 devices which have enables on both the transmitter and receiver. Because the transmitter enable is active
high, it is connected to the SLEEP# pin. The receiver enable is active low and is connected to the PWREN# pin. This
ensures that both the transmitters and receivers are enabled when the device is active, and disabled when the device
is in USB suspend mode. If the design is USB BUS powered, it may be necessary to use a P-Channel logic level
MOSFET ( controlled by PWREN# ) in the VCC line of the SP491 devices to ensure that the USB standby current of
500uA is met.
The SP491 is good for sending and receiving data at a rate of up to 5M Baud – in this case the maximum rate is
limited to 3M Baud by the FT232BM.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FT232BQ | 制造商:FTDI 制造商全稱:FTDI 功能描述:USB UART ( USB - Serial) I.C. |
| FT232BQ-REEL | 功能描述:USB 接口集成電路 USB to Serial UART IC QFN-32 RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| FT232HL | 制造商:FTDI 制造商全稱:FTDI 功能描述:FT232H Single Channel Hi-Speed USB to Multipurpose UART/FIFO IC |
| FT232HL-REEL | 功能描述:USB 接口集成電路 USB HS to UART/FIFO SPI/JTAG/I2C LQFP-48 RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| FT232HL-TRAY | 功能描述:USB 接口集成電路 USB HS to UART/FIFO SPI/JTAG/I2C LQFP-48 RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
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