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参数资料
| 型号： | FT245BL-REEL |
| 厂商： | FTDI, Future Technology Devices International Ltd |
| 文件页数： | 24/24页 |
| 文件大小： | 0K |
| 描述： | IC USB FS PARALLEL FIFO 32-LQFP |
| 标准包装： | 1,000 |
| 系列： | * |
| 类型： | * |
| 应用： | * |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-LQFP |
| 供应商设备封装： | 32-LQFP（7x7） |
| 包装： | 带卷 (TR) |
DS245BL Version 1.7
Future Technology Devices Intl. Ltd. 2005
Page 9 of 24
FT245BL USB FIFO ( USB - Parallel ) I.C.
POWER CONTROL GROUP
Pin#
Signal
Type
Description
10
PWREN#
OUT
Goes Low after the device is congured via USB, then high during USB suspend.
Can be used to control power to external logic using a P-Channel Logic Level
MOSFET switch. Enable the Interface Pull-Down Option in EEPROM when using
the PWREN# pin in this way.
11
SI / WU
IN
The Send Immediate / WakeUp signal combines two functions on a single pin. If
USB is in suspend mode (PWREN# = 1) and remote wakeup is enabled in the
EEPROM , strobing this pin low will cause the device to request a resume on the
USB Bus. Normally, this can be used to wake up the Host PC.
During normal operation (PWREN# = 0), if this pin is strobed low any data in the
device TX buffer will be sent out over USB on the next Bulk-IN request from the
drivers regardless of the pending packet size. This can be used to optimise USB
transfer speed for some applications. Tie this pin to VCCIO if not used.
MISCELLANEOUS SIGNAL GROUP
Pin#
Signal
Type
Description
4
RESET#
IN
Can be used by an external device to reset the FT245BL. If not required, tie to
VCC.
5
RSTOUT#
OUT
Output of the internal Reset Generator. Stays high impedance for ~ 5ms after
VCC > 3.5V and the internal clock starts up, then clamps its output to the 3.3V
output of the internal regulator. Taking RESET# low will also force RSTOUT# to
drive low. RSTOUT# is NOT affected by a USB Bus Reset.
27
XTIN
IN
Input to 6MHz Crystal Oscillator Cell. This pin can also be driven by an external
6MHz clock if required. Note : Switching threshold of this pin is VCC/2, so if
driving from an external source, the source must be driving at 5V CMOS level or
a.c. coupled to centre around VCC/2.
28
XTOUT
OUT
Output from 6MHz Crystal Oscillator Cell. XTOUT stops oscillating during USB
suspend, so take care if using this signal to clock external logic.
31
TEST
IN
Puts device in I.C. test mode – must be tied to GND for normal operation.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| FT245BQ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:FT245BQ USB FIFO ( USB - Parallel ) I.C. |
| FT245BQ-REEL | 功能描述:USB 接口集成电路 USB to Parallel FIFO 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 |
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