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| 型号： | FT232BL-REEL |
| 厂商： | FTDI, Future Technology Devices International Ltd |
| 文件页数： | 15/34页 |
| 文件大小： | 0K |
| 描述： | IC USB FS SERIAL UART 32-LQFP |
| 产品培训模块： | USB Introduction |
| 标准包装： | 1 |
| 系列： | USBmadeEZ-UART |
| 通道数： | 1，UART |
| FIFO's： | 256 字节 |
| 规程： | RS232，RS422，RS485 |
| 电源电压： | 4.35V ~ 5.25V |
| 带自动流量控制功能： | 是 |
| 带调制解调器控制功能： | 是 |
| 带CMOS： | 是 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-LQFP |
| 供应商设备封装： | 32-LQFP |
| 包装： | 标准包装 |
| 产品目录页面： | 634 (CN2011-ZH PDF) |
| 其它名称： | 768-1009-6 |
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Copyright 2011 Future Technology Devices International Limited
22
Document No.: FT_000329
FT232BL
/BQ USB UART IC Datasheet Version 2.2
Clearance No.: FTDI#
171
7 Device Configuration Examples
The following sections illustrate device configurations for the FT245BM.
7.1 Oscillator Configurations
Figure 7.1 3 Pin Ceramic Resonator Configuration
Figure 7.2 Crystal or 2 Pin
Ceramic Resonator Configuration
Figure 7.1 illustrates how to use the FT232B with a 3-Pin Ceramic Resonator. A suitable part would be a
ceramic resonator from Murata’s CERALOCK range or equivalent. 3-Pin ceramic resonators have the load
capacitors built into the resonator so no external loading capacitors are required. This makes for an
economical configuration. The accuracy of this Murata ceramic resonator is +/- 0.1% and it is specifically
designed for USB full speed applications. A 1 MegaOhm loading resistor across XTIN and XTOUT is
recommended in order to guarantee this level of accuracy.
Figure 7.2 illustrates how to use the FT232B with a 6MHz Crystal or 2-Pin Ceramic Resonator. These
devices do not have in-built loading capacitors. They must be added between XTIN, XTOUT and GND as
shown. A value of 27pF is shown as the capacitor in the example – this will be good for many crystals and
some resonators but do select the value based on the manufacturer’s recommendations wherever
possible. If using a crystal, use a parallel cut type. If using a resonator, see the previous note on
frequency accuracy.
相关PDF资料 |
PDF描述 |
|---|---|
| FT232HL-REEL | IC HS USB TO UART/FIFO 48LQFP |
| FT232RL-REEL | IC USB FS SERIAL UART 28-SSOP |
| FT245BL-REEL | IC USB FS PARALLEL FIFO 32-LQFP |
| FT245RL-REEL | IC USB TO PARALLEL FIFO 28-SSOP |
| FT4232HQ-REEL | IC USB HS QUAD UART/SYNC 64-QFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 接口集成电路 Obsolete FT232BL RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| FT232BQ | 制造商:FTDI 制造商全称:FTDI 功能描述:USB UART ( USB - Serial) I.C. |
| FT232BQ-REEL | 功能描述:USB 接口集成电路 USB to Serial UART IC QFN-32 RoHS:否 制造商:Cypress Semiconductor 产品:USB 2.0 数据速率: 接口类型:SPI 工作电源电压:3.15 V to 3.45 V 工作电源电流: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:WLCSP-20 |
| FT232HL | 制造商:FTDI 制造商全称:FTDI 功能描述:FT232H Single Channel Hi-Speed USB to Multipurpose UART/FIFO IC |
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