- 您现在的位置：买卖IC网 > PDF目录223808 > FT245BL (Future Technology Devices International Ltd) PDF资料下载
参数资料
| 型号： | FT245BL |
| 厂商： | Future Technology Devices International Ltd |
| 元件分类： | 微控制器/微处理器 |
| 中文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PQFP32 |
| 封装： | 7 X 7 MM, 0.80 MM PITCH, LEAD FREE, LQFP-32 |
| 文件页数： | 19/24页 |
| 文件大小： | 995K |
| 代理商： | FT245BL |
DS245B Version 1.7
Future Technology Devices Intl. Ltd. 2005
Page 4 of 24
FT245BM USB FIFO ( USB - Parallel ) I.C.
approach allows a customer to create a “generic”
USB peripheral who’s hardware function can be
dened under control of the application software.
The FPGA based hardware can be easily upgraded
or totally changed simply by changing the FPGA
conguration data le. Application notes, software
and development modules for this application area
will be available from FTDI and other 3rd party
developers.
Less External Support Components
As well as eliminating the RCCLK RC network, and
for most applications the need for an external reset
circuit, we have also eliminated the requirement
for a 100K pull-up on EECS to select 6MHz
operation. When the FT245BM is being used
without the conguration EEPROM, EECS, EESK
and EEDATA can now be left n/c. For circuits
requiring a long reset time (where the device is
reset externally using a reset generator I.C., or
reset is controlled by the IO port of a MCU, FPGA
or ASIC device) an external transistor circuit is
no longer required as the 1.5K pull-up resistor on
USBDP can be wired to the RSTOUT# pin instead
of to 3.3V. Note : RSTOUT# drives out at 3.3V
level, not at 5V VCC level. This is the preferred
conguration for new designs.
Extended EEPROM Support
The previous generation of devices only supported
EEPROM of type 93C46 (64 x 16 bit). The new
devices will also work with EEPROM type 93C56
(128 x 16 bit) and 93C66 (256 x 16 bit). The extra
space is not used by the device, however it is
available for use by other external MCU / logic
whilst the FT245BM is being held in reset.
USB 2.0 ( full speed option )
A new EEPROM based option allows the FT245BM
to return a USB 2.0 device descriptor as opposed
to USB 1.1. Note : The device would be a USB 2.0
Full Speed device (12Mb/s) as opposed to a USB
2.0 High Speed device (480Mb/s).
Multiple Device Support without EEPROM
When no EEPROM (or a blank or invalid
EEPROM) is attached to the device, the FT245BM
no longer gives a serial number as part of its
USB descriptor. This allows multiple devices to
be simultaneously connected to the same PC.
However, we still highly recommend that EEPROM
is used, as without serial numbers a device can
only be identied by which hub port in the USB tree
it is connected to which can change if the end user
re-plugs the device into a different USB port.
EEREQ# / EEGNT#
These (FT8U245AM) pins are no longer supported
on the FT245BM device. They have been replaced
with the new SI / WU and PWREN# signals
respectively.
OBSOLETE
相关PDF资料 |
PDF描述 |
|---|---|
| FT245BQ | |
| FT245BM | |
| FTL-1419-3D | FIBER OPTIC TRANSCEIVER, 1290-1340nm, 1250Mbps(Tx), 1250Mbps(Rx), PANEL MOUNT |
| FTLF1321P1BTL | FIBER OPTIC TRANSCEIVER, 1270-1360nm, 2667Mbps(Tx), 2667Mbps(Rx), SURFACE MOUNT, LC CONNECTOR |
| FTLF1321P1WTL | FIBER OPTIC TRANSCEIVER, 1270-1360nm, 2667Mbps(Tx), 2667Mbps(Rx), SURFACE MOUNT, LC CONNECTOR |
相关代理商/技术参数 |
参数描述 |
|---|---|
| FT245BL/TR | 制造商:Future Technology Devices International (FTDI Chip) 功能描述:IC USB FIFO SMD LQFP32 245 制造商:Future Technology Devices International (FTDI Chip) 功能描述:IC, USB FIFO, SMD, LQFP32, 245 制造商:Future Technology Devices International (FTDI Chip) 功能描述:IC, USB FIFO INTERFACE, 480MBPS, LQFP-32; USB Type:FIFO; USB Version:1.1, 2.0; Supply Voltage Min:4.35V; Supply Voltage Max:5.25V; Digital IC Case Style:LQFP; No. of Pins:32; Data Rate:480Mbps; No. of Ports:2; MSL:MSL 3 - 168 hours ;RoHS Compliant: Yes |
| FT245BL-REEL | 功能描述:USB 接口集成电路 USB to Parallel FIFO IC LQFP-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 |
| FT245BL-TRAY | 制造商:Future Technology Devices International (FTDI Chip) 功能描述:USB FIFO ( USB - PARALLEL ) I.C. |
| FT245BM | 功能描述:先进先出 Obsolete See FT245RL RoHS:否 制造商:IDT 电路数量: 数据总线宽度:18 bit 总线定向:Unidirectional 存储容量:4 Mbit 定时类型:Synchronous 组织:256 K x 18 最大时钟频率:100 MHz 访问时间:10 ns 电源电压-最大:3.6 V 电源电压-最小:6 V 最大工作电流:35 mA 最大工作温度:+ 85 C 封装 / 箱体:TQFP-80 封装: |
| FT245BM-TRAY | 功能描述:USB 接口集成电路 Obsolete See FT245RL 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 |
发布紧急采购，3分钟左右您将得到回复。