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參數(shù)資料
| 型號(hào)： | FT232BL-REEL |
| 廠商： | FTDI, Future Technology Devices International Ltd |
| 文件頁數(shù)： | 9/34頁 |
| 文件大小： | 0K |
| 描述： | IC USB FS SERIAL UART 32-LQFP |
| 產(chǎn)品培訓(xùn)模塊： | USB Introduction |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | USBmadeEZ-UART |
| 通道數(shù)： | 1，UART |
| FIFO's： | 256 字節(jié) |
| 規(guī)程： | RS232，RS422，RS485 |
| 電源電壓： | 4.35V ~ 5.25V |
| 帶自動(dòng)流量控制功能： | 是 |
| 帶調(diào)制解調(diào)器控制功能： | 是 |
| 帶CMOS： | 是 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 32-LQFP |
| 供應(yīng)商設(shè)備封裝： | 32-LQFP |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 產(chǎn)品目錄頁面： | 634 (CN2011-ZH PDF) |
| 其它名稱： | 768-1009-6 |
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Copyright 2011 Future Technology Devices International Limited
17
Document No.: FT_000329
FT232BL
/BQ USB UART IC Datasheet Version 2.2
Clearance No.: FTDI#
171
6 USB Power Configurations
The following sections illustrate possible USB power configurations for the FT232B.
6.1 USB Bus Powered Configuration
Figure 6.1 Bus Powered Configuration
Figure 6.1 illustrates a typical USB bus powered configuration. A USB Bus Powered device gets its power
from the USB bus. Basic rules for USB Bus power devices are as follows:
a) On plug-in, the device must draw no more than 100mA
b) On USB Suspend the device must draw no more than 500uA (2.5mA for devices configured to
support remote wake-up).
c) A Bus Powered High Power Device (one that draws more than 100mA) should use the PWREN#
pin to keep the current below 100mA on plug-in and 500uA(2.5mA) on USB suspend.
d) A device that consumes more than 100mA cannot be plugged into a USB Bus Powered Hub
e) No device can draw more that 500mA from the USB Bus.
The power descriptor in the EEPROM should be programmed to match the current draw of the device.
PWRCTL (pin 14) is pulled low to configure the device with a USB Bus Power descriptor. A Ferrite Bead is
connected in series with USB power to prevent noise from the device and associated circuitry (EMI) being
radiated down the USB cable to the Host. The value of the Ferrite Bead depends on the total current
required by the circuit – a suitable range of Ferrite Beads is available from Steward (www.steward.com)
for example Steward Part # MI0805K400R-00, also available as DigiKey Part # 240-1035-1.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FT232BL-TRAY | 制造商:Future Technology Devices International (FTDI Chip) 功能描述:USB-to-UART 1-CH 128Byte FIFO 5V 32-Pin LQFP Tray |
| FT232BM | 功能描述:UART 接口集成電路 Obsolete FT232BL RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| 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 |
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