Datasheet > FT245BQ

FT245BQ

更新时间： 2024-01-23 15:17:15

品牌	Logo	应用领域
飞特帝亚 - FTDI		先进先出芯片
页数	文件大小	规格书
24页	557K
描述
USB FIFO ( USB - Parallel ) I.C.

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中文翻译

获取价格

技术参数
数据手册

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FT245BQ 技术参数

是否Rohs认证：	符合	生命周期：	Active
包装说明：	,	Reach Compliance Code：	compliant
风险等级：	5.81	Base Number Matches：	1

FT245BQ 数据手册

FT245BQ USB FIFO ( USB - Parallel ) I.C.

•

Multiple Device Support without EEPROM

When no EEPROM (or a blank or invalid

or totally changed simply by changing the FPGA

conﬁguration data ﬁle. Application notes, software

and development modules for this application area

will be available from FTDI and other 3^rdparty

developers.

EEPROM) is attached to the device, the FT245BQ

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 identiﬁed 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.

•

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 FT245BQ is being used

without the conﬁguration 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

conﬁguration for new designs.

•

EEREQ# / EEGNT#

These (FT8U245AM) pins are no longer supported

on the FT245BQ device. They have been replaced

with the new SI / WU and PWREN# signals

respectively.

•

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 FT245BQ is being held in reset.

•

USB 2.0 ( full speed option )

A new EEPROM based option allows the FT245BQ

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).

DS245BQ Version 1.7

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与FT245BQ相关器件

型号	品牌	获取价格	描述	数据表
FT245R	FTDI	获取价格	USB FIFO I.C. Incorporating FTDIChip-ID⑩ Secu
FT245R_10	FTDI	获取价格	USB FIFO IC - Single chip USB to parallel FIFO bidirectional data transfer interface
FT245RL	FTDI	获取价格	Bit Bang Modes for the FT232R and FT245R
FT245RL-2000	FTDI	获取价格	USB FIFO IC - Single chip USB to parallel FIFO bidirectional data transfer interface
FT245RQ	FTDI	获取价格	Bit Bang Modes for the FT232R and FT245R
FT245RQ-6000	FTDI	获取价格	USB FIFO IC - Single chip USB to parallel FIFO bidirectional data transfer interface
FT24C02A	ETC	获取价格	Two-Wire Serial EEPROM
FT24C02A-5DG-B	ETC	获取价格	The FT24C02A is 2048 bits of serial Electrical Erasable and Programmable Read Only Memory,
FT24C02A-5DR-B	ETC	获取价格	The FT24C02A is 2048 bits of serial Electrical Erasable and Programmable Read Only Memory,
FT24C02A-5LG-T	ETC	获取价格	The FT24C02A is 2048 bits of serial Electrical Erasable and Programmable Read Only Memory,

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