参数资料
| 型号： | DLP-USB232R |
| 厂商： | DLP Design Inc |
| 文件页数： | 9/12页 |
| 文件大小： | 0K |
| 描述： | MODULE USB-TO-SRL UART 18-DIP |
| 产品目录绘图： | DLP-USB2(32, 45)R |
| 标准包装： | 1 |
| 类型： | USB 至 UART |
| 连接器类型： | 迷你型 B 至 DIL（双直插式） |
| 产品目录页面： | 635 (CN2011-ZH PDF) |
| 其它名称： | 813-1024 |
Bus-Powered Circuit with Power Control
USB bus-powered circuits need to be able to power down in USB Suspend Mode in order to
meet the <= 2.5mA total suspend current requirement (including external logic):
P-Channel
Power MOSFET
S
D
Figure 4.
G
.1uF
10K
1K
Microcontroller
VCC
PWREN#
7
8
9
Power Controlled by
PWREN#
Figure 4 shows how to use a discrete P-Channel MOSFET to control the power to external logic
circuits. This “soft-start” circuit accommodates designs that draw more than 100mA at power
up.
Please note the following points in connection with power-controlled designs:
1. The logic to be controlled must have its own reset circuitry so that it will automatically reset
itself when power is reapplied on coming out of Suspend.
2. Set the soft pull-down option bit in the FT232R EEPROM.
3. For USB high-power, bus-powered applications (ones that consume greater than 100mA,
and up to 500mA of current from the USB bus), the power consumption of the application must
be set in the Max Power Field in the internal FT232R EEPROM. A high-power, bus-powered
application uses the descriptor in the internal FT232R EEPROM to inform the system of its
power requirements.
4. PWREN# gets its VCC from VCCIO. For designs using 3.3-volt logic, ensure that VCCIO is
not powered down during Suspend.
Rev. 1.0 (November 2008)
9
? DLP Design, Inc.
相关PDF资料 |
PDF描述 |
|---|---|
| DLP-USB245M-G | MODULE USB-TO-TTL PARL FIFO CONV |
| DLP-USB245R | MODULE USB-TO-PARL FIFO 18-DIP |
| DM163001 | BOARD DEMO PICDEM-1 |
| DM163004-LT | BOARD DEMO PICDEM.NET |
| DM163005 | KIT EVAL PIC16C432/433 LIN BUSS |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DLP-USB245M | 功能描述:界面模块 USB-FIFO Adapter RoHS:否 制造商:4D Systems 产品:Serial Converters 通道/端口数量: 数据速率: 接口类型:USB, UART 工作电源电压:3.3 V, 5 V 最大工作温度: |
| DLP-USB245M-G | 功能描述:界面模块 USB-FIFO Adapter RoHS:否 制造商:4D Systems 产品:Serial Converters 通道/端口数量: 数据速率: 接口类型:USB, UART 工作电源电压:3.3 V, 5 V 最大工作温度: |
| DLP-USB245R | 功能描述:界面模块 USB-TO-PARALLEL FIFO INTERFACE MODULE RoHS:否 制造商:4D Systems 产品:Serial Converters 通道/端口数量: 数据速率: 接口类型:USB, UART 工作电源电压:3.3 V, 5 V 最大工作温度: |
| DLP-UT1 | 功能描述:工业温度传感器 TEMPERATURE SENSOR RoHS:否 制造商:Texas Instruments 准确性:1 C 功能:Temperature Sensing 25 摄氏度时的电阻: 温度范围:- 55 C to + 127 C 电源电流: 电源电压:2.7 V to 5.5 V |
| DLP-UTH8 | 功能描述:数据记录与采集 DLP SENSOR HUB RoHS:否 制造商:Lantronix 描述/功能:Analog device server 显示器类型:None 电流额定值: |
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