參數(shù)資料
型號： FT2232C
廠商： Electronic Theatre Controls, Inc.
英文描述： FT2232C Dual USB UART / FIFO I.C.
中文描述： FT2232C雙USB的UART / FIFO的集成電路
文件頁數(shù)： 19/51頁
文件大小： 907K
代理商： FT2232C
DS2232C Version 1.4
Future Technology Devices International Ltd. 2005 Page 19 of 54
FT2232C Dual USB UART / FIFO I.C.
8.0 Standard Device Configuration Examples
8.1 Oscillator Configurations
Figure 5
3-Pin Ceramic Resonator Configuration
Figure 6
Crystal or 2-Pin Ceramic Resonator
Configuration
XTIN
XTOUT
44
FT2232C
3-Pin Resonator
6MHz
1M
43
XTIN
XTOUT
43
44
FT2232C
2 - Pin Resonator
or Crystal
6MHz
27pF
27pF
Figure 5 illustrates how to use the FT2232C with a 3-Pin Ceramic Resonator. A suitable part would be a ceramic
resonator from Murata’s CERALOCK range. (Murata Part Number CSTCR6M00G15), 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 +/- 0.25% 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.
Other ceramic resonators with a lesser degree of accuracy (typically +/- 0.5%) are technically out-with the USB
specification, but it has been calculated that using such a device will work satisfactorily in practice with a FT2232C
design. An example of such a device is Murata’s CSTLSM00G53.
Figure 6 illustrates how to use the FT2232C with a 6MHz Crystal or 2-Pin Ceramic Resonator. In this case, these
devices do not have in-built loading capacitors so these have to 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 manufacturers recommendations wherever possible. If using a crystal,
use a parallel cut type. If using a resonator, see the previous note on frequency accuracy.
It is also possible to use a 6 MHz Oscillator with the FT2232C. In this case the output of the oscillator would be
connected to XTIN, and XTOUT should be left unconnected. The oscillator must have a CMOS output.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
FT2232C_04 制造商:FTDI 制造商全稱:FTDI 功能描述:Dual USB UART / FIFO I.C.
FT2232D 制造商:Future Technology Devices International 功能描述:UART 2-CH 3.3V/5V 48-Pin LQFP 制造商:Future Technology Devices International 功能描述:UART 2-CH 3.3V/5V 48-Pin LQFP Bulk 制造商:Future Technology Devices International (FTDI Chip) 功能描述:USB Full Speed to Dual Channel Serial UART/FIFO/JTAG/SPI/I2C IC - LQFP-48
FT2232D/TR 制造商:Future Technology Devices International (FTDI Chip) 功能描述:USB-UART/FIFO SMD 2232 LQFP48 制造商:Future Technology Devices International (FTDI Chip) 功能描述:USB-UART/FIFO, SMD, 2232, LQFP48 制造商:Future Technology Devices International (FTDI Chip) 功能描述:USB-UART/FIFO, SMD, 2232, LQFP48; USB Type:FIFO; USB Version:2.0; Supply Voltage Min:3V; Supply Voltage Max:5.25V; Digital IC Case Style:LQFP; No. of Pins:48; Data Rate:12Mbps; No. of Ports:2; Operating Temperature Min:-40C ;RoHS Compliant: Yes
FT2232D-REEL 功能描述:USB 接口集成電路 USB to Dual UART/ FIFO/SPI/JTAG/I2C 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
FT2232D-TRAY 制造商:Future Technology Devices International (FTDI Chip) 功能描述:DUAL USB TO SERIAL UART/FIFO IC
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