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参数资料
| 型号： | FT245RQ-REEL |
| 厂商： | FTDI, Future Technology Devices International Ltd |
| 文件页数： | 37/37页 |
| 文件大小： | 0K |
| 描述： | IC USB TO PARALLEL FIFO 32-QFN |
| 产品培训模块： | USB Introduction |
| 标准包装： | 1 |
| 应用： | USB 至 FIFO 控制器 |
| 接口： | USB，FIFO，（同步/异步） |
| 电源电压： | 1.8 V ~ 5.25 V |
| 封装/外壳： | 32-VFQFN 裸露焊盘 |
| 供应商设备封装： | 32-QFN 裸露焊盘（5x5） |
| 包装： | 标准包装 |
| 安装类型： | 表面贴装 |
| 产品目录页面： | 634 (CN2011-ZH PDF) |
| 配用： | 768-1020-ND - MOD USB PARALLEL FIFO DEV FT245R |
| 其它名称： | 768-1012-6 |
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Copyright 2010 Future Technology Devices International Limited
9
Document No.: FT_000052
FT245R USB FIFO IC Datasheet Version 2.12
Clearance No.: FTDI# 39
Pin No.
Name
Type
Description
11
D3
I/O
FIFO Data Bus Bit 3
12
PWREN#
Output
Goes low after the device is configured by USB, then high during USB suspend.
Can be used to control power to external logic P-Channel logic level MOSFET
switch. Enable the interface pull-down option when using the PWREN# pin in this
way. Should be pulled to VCCIO with 10kΩ resistor.
13
RD#
Input
Enables the current FIFO data byte on D0...D7 when low. Fetched the next FIFO
data byte (if available) from the receive FIFO buffer when RD# goes from high to
low. See Section 3.5 for timing diagram.
14
WR
Input
Writes the data byte on the D0...D7 pins into the transmit FIFO buffer when WR
goes from high to low. See Section 3.6 for timing diagram.
22
TXE#
Output
When high, do not write data into the FIFO. When low, data can be written into
the FIFO by strobing WR high, then low. During reset this signal pin is tri-state.
See Section 3.6 for timing diagram.
23
RXF
Output
When high, do not read data from the FIFO. When low, there is data available in
the FIFO which can be read by strobing RD# low, then high again. During reset
this signal pin is tri-state. See Section 3.5 for timing diagram.
If the Remote Wakeup option is enabled in the internal EEPROM, during USB
suspend mode (PWREN# = 1) RXF# becomes an input. This can be used to wake
up the USB host from suspend mode by strobing this pin low for a minimum of
20ms which will cause the device to request a resume on the USB bus.
Table 3.4 FIFO Interface Group (see note 3)
Notes:
1. The minimum operating voltage VCC must be +4.0V (could use VBUS=+5V) when using the
internal clock generator. Operation at +3.3V is possible using an external crystal oscillator.
2. For details on how to use an external crystal, ceramic resonator, or oscillator with the FT245R,
please refer Section 8.2
3. When used in Input Mode, the input pins are pulled to VCCIO via internal 200kΩ resistors. These
pins can be programmed to gently pull low during USB suspend (PWREN# = “1”) by setting an
option in the internal EEPROM.
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相关代理商/技术参数 |
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|---|---|
| FT245RQ-TRAY | 制造商:Future Technology Devices International (FTDI Chip) 功能描述:Single Chip USB Tray |
| FT24B3 031175 | 制造商:Comair Rotron 功能描述:FAN 120X120X25MM 24VDC |
| FT24B3-E2 | 制造商:Comair Rotron 功能描述:FAN FLIGHT II 120X120X25MM 24V |
| FT24B3-E2 | 制造商:Comair Rotron 功能描述:FAN FLIGHT II 120X120X25 24V |
| FT24C02A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Two-Wire Serial EEPROM |
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