8.0 DEVICE CONFIGURATION EXAMPLES
USB Bus-Powered and Self-Powered Configurations
Figure 1.
7
8
9
Bus-Powered
5V System
The figure above illustrates a typical USB bus-powered configuration. A USB bus-powered
device gets its power from the USB bus.
5.0V
Figure 2.
7
8
9
Self-Powered
5V System
Figure 2 illustrates a typical USB self-powered configuration. A USB self-powered device gets
its power from its own power supply and does not draw current from the USB bus.
3.3 - 5V
Microcontroller
8 Data Lines
Figure 3.
7
8
9
RXF#
RD#
TXE#
WR
Bus-Powered
5V System with
3.3V Logic Interface
Figure 3 shows how to configure the DLP-USB1232H to interface with a microcontroller via the
parallel 245 FIFO interface mode. In this example, the target electronics can operate at from
3.3 - 5 volts since the DLP-USB1232H interface I/O pins are 5 volt tolerant.
Rev. 1.3 (December 2009)
10
? DLP Design, Inc.
相关PDF资料
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相关代理商/技术参数
DLP-USB232M 功能描述:界面模块 USB-UART 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-USB232M-G 功能描述:界面模块 USB-UART 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-USB232M-G2 功能描述:MODULE USB-TO-TTL SRL UART CONV 制造商:dlp design inc. 系列:- 零件状态:在售 类型:USB 至串行 转换自(适配器端):USB - B 2.0 母头 转换至(适配器端):DIL(Dual Inline) 接口:UART 特性:- 包括:- 标准包装:1
DLP-USB232R 功能描述:界面模块 USB-TO-SERIAL UART 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-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