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Description: DM9000AE的中文手册。很难得得哦。LOCAL BUS芯片现推荐一款DM9000AE网卡芯片，其基本特性是48PIN，10/100MLOCAL-BUS interface，工作模式8/16bit, 有AUTO－Mdix(自动翻转）、TCP/Ip加速（check sum offload)减轻CPU负担，提高整机效能，20ns响应时间。2.5V/3.3V低功耗。广泛应用在IPTV、IPSETBOX、VOD、IPCAMERA、IPVIDEOPHONE等产品.-DM9000AE the Chinese manual. In a rare oh. LOCAL BUS new chip is recommended DM9000AE LAN chip its basic features are 48PIN, 10/100MLOCAL-BUS interface, mode 8/16bit, AUTO - Mdix (automatic overturned), TCP / Ip acceleration (check sum offload) reducing CPU burden, improve unit efficiency, 20ns response time. 2.5V/3.3V low power consumption. Widely used in IPTV, IPSETBOX, VOD, IPCAMERA. IPVIDEOPHONE products.
Platform: |
Size: 4858539 |
Author: 黄勇 |
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Description: The AMC2576 series is a step-down switching regulator with all the required active functions. It is capable of driving 3A load with excellent line and load regulations. These devices are available in fixed output voltages of 3.3V, 5V, and an adjustable output version.
The AMC2576 series offers a high-efficiency replacement for popular three-terminal linear regulators. It requires only a minimum number of external components. Substantially, it reduces not only the area of board size but also the size of the heat sink. In some cases, no heat sink is required.
The ± 4％ tolerance on output voltage within specified input voltages and output load conditions is guaranteed. The oscillator frequency accuracy is within ±10％. External shutdown is included, featuring 70 A(typical) standby current. The output switch includes cycle-by-cycle current limitation, as well as thermal shutdown for full protection under fault conditions.
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Size: 21757 |
Author: dfdfdfd |
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Description: 做DSP最应该懂得157个问题（回答）
四.5V/3.3V如何混接？
TI DSP的发展同集成电路的发展一样，新的DSP都是3.3V的，但目前还有许多外围电路是5V的，因此在DSP系统中，经常有5V和3.3V的DSP混接问题。在这些系统中，应注意： 1)DSP输出给5V的电路（如D/A），无需加任何缓冲电路，可以直接连接。 2)DSP输入5V的信号（如A/D），由于输入信号的电压>4V，超过了DSP的电源电压，DSP的外部信号没有保护电路，需要加缓冲，如74LVC245等，将5V信号变换成3.3V的信号。 3)仿真器的JTAG口的信号也必须为3.3V，否则有可能损坏DSP。
五.为什么要片内RAM大的DSP效率高？
Platform: |
Size: 25756 |
Author: mdai |
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Description: General Description
The LM1084 is a series of low dropout voltage positive
regulators with a maximum dropout of 1.5V at 5A of load
current. It has the same pin-out as National Semiconductor’s
industry standard LM317.
The LM1084 is available in an adjustable version, which can
set the output voltage with only two external resistors. It is
also available in three fixed voltages: 3.3V, 5.0V and 12.0V.
The fixed versions intergrate the adjust resistors.
The LM1084 circuit includes a zener trimmed bandgap reference,
current limiting and thermal shutdown.
The LM1084 series is available in TO-220 and TO-263 packages.
Refer to the LM1085 for the 3A version, and the
LM1086 for the 1.5A version.
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Size: 241161 |
Author: jiangxiangliu |
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Description: The IR2184(4)(S) are high voltage, high speed power MOSFET and IGBT drivers with dependent high and low side referenced output channels. Pro- prietary HVIC and latch immune CMOS technologies enable rugge- dized monolithic construction. The logic input is compatible with standard CMOS or LSTTL output, down to 3.3V logic. The output drivers feature a high pulse current buffer stage designed for minimum driver cross-conduction. The floating channel can be used to drive an N-channel power MOSFET or IGBT in the high side configuration which operates up to 600 volts.
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Size: 178317 |
Author: 5821594 |
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Description: DM9000AE的中文手册。很难得得哦。LOCAL BUS芯片现推荐一款DM9000AE网卡芯片，其基本特性是48PIN，10/100MLOCAL-BUS interface，工作模式8/16bit, 有AUTO－Mdix(自动翻转）、TCP/Ip加速（check sum offload)减轻CPU负担，提高整机效能，20ns响应时间。2.5V/3.3V低功耗。广泛应用在IPTV、IPSETBOX、VOD、IPCAMERA、IPVIDEOPHONE等产品.-DM9000AE the Chinese manual. In a rare oh. LOCAL BUS new chip is recommended DM9000AE LAN chip its basic features are 48PIN, 10/100MLOCAL-BUS interface, mode 8/16bit, AUTO- Mdix (automatic overturned), TCP/Ip acceleration (check sum offload) reducing CPU burden, improve unit efficiency, 20ns response time. 2.5V/3.3V low power consumption. Widely used in IPTV, IPSETBOX, VOD, IPCAMERA. IPVIDEOPHONE products.
Platform: |
Size: 4857856 |
Author: 黄勇 |
Hits:
Description: The AMC2576 series is a step-down switching regulator with all the required active functions. It is capable of driving 3A load with excellent line and load regulations. These devices are available in fixed output voltages of 3.3V, 5V, and an adjustable output version.
The AMC2576 series offers a high-efficiency replacement for popular three-terminal linear regulators. It requires only a minimum number of external components. Substantially, it reduces not only the area of board size but also the size of the heat sink. In some cases, no heat sink is required.
The ± 4％ tolerance on output voltage within specified input voltages and output load conditions is guaranteed. The oscillator frequency accuracy is within ±10％. External shutdown is included, featuring 70 A(typical) standby current. The output switch includes cycle-by-cycle current limitation, as well as thermal shutdown for full protection under fault conditions.
-The AMC2576 series is a step-down switching regulator with all the required active functions. It is capable of driving 3A load with excellent line and load regulations. These devices are available in fixed output voltages of 3.3V, 5V, and an adjustable output version . The AMC2576 series offers a high-efficiency replacement for popular three-terminal linear regulators. It requires only a minimum number of external components. Substantially, it reduces not only the area of board size but also the size of the heat sink. In some cases, no heat sink is required.The ± 4 tolerance on output voltage within specified input voltages and output load conditions is guaranteed. The oscillator frequency accuracy is within ± 10. External shutdown is included, featuring 70
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Size: 21504 |
Author: dfdfdfd |
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Description: 文章介绍的是DSP的输入输出3.3V 与5V系统的匹配方案以及ADC输入接口方案，英文版的哦-article introduces the DSP input and output 3.3V and 5V system and the matching program received input ADC I programs and English oh
Platform: |
Size: 129024 |
Author: 冬虫草 |
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Description: AD876是由AD公司生产的10位20M的A/D转换芯片。两种供电3。3V和5V选择。160MW低功耗。28PIN的SSOP或者SOIC封装。本人花了1周时间调试。程序为KEIL C环境。特与大家分享。-AD876 is produced by the AD 10 41 A/D conversion chip. Two power supply 3. 3 V and 5 V choice. Low power consumption of 160 MW unit. 28PIN the SSOP or SOIC packaging. I spent a week debugging time. KEIL C procedures for the environment. Special share with you.
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Size: 873472 |
Author: goldman |
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Description: J T AG 接口插座与DSP芯片的距离:为了保证JTAG信号不受干扰，需
要注意两者之间的距离不超过六英寸(15甲24厘米)，超过这个距离，就需要在中
间加缓冲芯片。本设计中使用了244作为缓冲芯片，但其原因不是由于器件之间
距离过长，而是考虑到仿真器工作在5V电压，DSP引脚为3.3V，为了电平兼容
性而进行的电压转换功能。-JT AG socket interface with DSP chips Distance: JTAG signals in order to guarantee uninterrupted, need to pay attention to the distance between the two is not more than 6 inches (15 A 24 centimeters), more than this distance, we need to increase the buffer between chips. This design was used as a buffer chip 244, but its not because the distance between devices is too long, but taking into account the work in the simulator 5V Voltage, DSP-pin to 3.3V, in order to conduct the compatibility level of the voltage conversion function.
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Size: 297984 |
Author: feng |
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Description: 本程序使用MSP430F149驱动PS2接口的PC键盘，使用了SN74LVC4245用作电平转换；PS2 端口使用了标准的六芯插座，可以接收来自标准键盘、鼠标的数据。由于键盘、鼠标都是 5V 供电系统，而 MSP430F149 只能工作在 3.3V，所以需要在两者之间进行电平转换。根据键盘的工作原理，MCU只要接收键盘发送过来的时钟信号和数据信号，然后对数据信号进行解码就可以了。为此我们利用了电平转换电路的两根数据线，让键盘的时钟线 CLK 连接SN74LVC4245 的A8 端口，键盘的数据线DATA连接SN74LVC4245 的A7 端口-This procedure using the MSP430F149 the PC interface driver PS2 keyboard, used for SN74LVC4245 level conversion PS2 port using a standard six-core socket, you can receive from the standard keyboard and mouse data. As the keyboard, mouse are 5V power supply system, while the MSP430F149 can only work in 3.3V, so it is necessary to carry out between the two-level conversion. According to the working principle of the keyboard, MCU as long as the receiver from the keyboard to send the clock signal and data signals, data signals and then decode it. To this end, we made use of level-shifting circuit of two data lines, so that the keyboard clock line CLK of the A8 connection SN74LVC4245 port, keyboard data line DATA port to connect SN74LVC4245 the A7
Platform: |
Size: 36864 |
Author: skywalker |
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Description: 做DSP最应该懂得157个问题（回答）
四.5V/3.3V如何混接？
TI DSP的发展同集成电路的发展一样，新的DSP都是3.3V的，但目前还有许多外围电路是5V的，因此在DSP系统中，经常有5V和3.3V的DSP混接问题。在这些系统中，应注意： 1)DSP输出给5V的电路（如D/A），无需加任何缓冲电路，可以直接连接。 2)DSP输入5V的信号（如A/D），由于输入信号的电压>4V，超过了DSP的电源电压，DSP的外部信号没有保护电路，需要加缓冲，如74LVC245等，将5V信号变换成3.3V的信号。 3)仿真器的JTAG口的信号也必须为3.3V，否则有可能损坏DSP。
五.为什么要片内RAM大的DSP效率高？
Platform: |
Size: 25600 |
Author: mdai |
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Description: 可以显示时、分、秒，可以设置时间，精度要求0.001s ，允许电压： 3.3V
-Can display hours, minutes and seconds, you can set a time, precision 0.001s, allowing voltage: 3.3V
Platform: |
Size: 48128 |
Author: yoyo |
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Description: 对于MSP430F169，采用单通道单次转换方式，对接口板上的一路模拟信号P6.0（0~3.3V可调电压）进行A/D转换，并将12位转换结果通过串口发到PC机，由PC机的串口助手显示出来。-For MSP430F169, the use of single-channel single conversion by means of an interface board all the way analog signal P6.0 (0 ~ 3.3V adjustable voltage) for A/D conversion, 12 conversion and the results sent to the PC through the serial machine by the PC-Serial aides displayed.
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Size: 1024 |
Author: 沈丽 |
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Description: Protel 99SE格式
为目前自己手头一个项目，改造某解码器的电源。原来输入为220V，现在输入为12V，输出为3V和3.3V，电流分别为1A。-Protel 99SE own format for the current on-hand a project to transform the power of a decoder. The original input is 220V, now input 12V, output for 3V and 3.3V, respectively current 1A.
Platform: |
Size: 45056 |
Author: 蔡怡俊 |
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Description: 概述
● 全速设备接口，兼容 USB V2.0，外围元器件只需要晶体和电容。
● 可选：通过外部的低成本串行EEPROM 定义厂商 ID、产品 ID、序列号等。
● 支持5V电源电压和3.3V电源电压。
● 低成本，直接转换原串口外围设备、原并口打印机、原并口外围设备。
● 采用SOP-28封装，串口应用还提供小型的 SSOP-20 封装。
● 由于是通过USB转换的接口，所以只能做到应用层兼容，而无法绝对相同。 -Say all
● The full speed equipments connects, and permit the USB V2.0, a machine of outer circle piece needs the crystal and electric capacities only.
● Eligibility:The low cost string that passes the exterior goes the EEPROM to define factory ID, product ID, etc. sequence.
● Support the 5 V power supply electric voltage and 3.3 V power supply electric voltages.
● Low cost, direct conversion original a peripherals, original combine a printer, original combine a peripherals.
● Adopt the SOP-28s pack, an application still provides small scaled SSOP-20s to pack.
● In view of the fact convert through an USB of connect, so can make to apply the layer and permit only, but can t absolute homology.
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Size: 325632 |
Author: 胜客 |
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Description: 我们对处理速度的需求日益增长，伴随着这种增
长，用来构建单片机的晶体管尺寸则在持续减小。
以更低的成本实现更高的集成度，也促进了对更小
的几何尺寸的需求。随着尺寸的减小，晶体管击穿
电压变得更低，最终，当击穿电压低于电源电压
时，就要求减小电源电压。因此，随着速度的提高
和复杂程度的上升，对于高密度器件而言，不可避
免的后果就是电源电压将从 5V 降至 3.3V，甚至
1.8V。-We are increasing the demand for processing speed, along with this growth, the transistors used to build the single-chip size continues to decrease. Lower cost to achieve higher integration, but also promoted the geometry of a smaller demand. As the size decreases, the transistor breakdown voltage becomes lower, and ultimately, when the breakdown voltage below the supply voltage, then reduce the supply voltage requirements. Thus, with the speed and complexity of the increase, for high-density devices, the inevitable consequence is that the power supply voltage from 5V to 3.3V, or 1.8V.
Platform: |
Size: 722944 |
Author: 季小虎 |
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Description: 3.3V电压与5V电压的接口技术，资料详细了实现的多种方法-Voltage at 3.3V and 5V interface technology, detailed information on a variety of methods to achieve
Platform: |
Size: 723968 |
Author: zy |
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Description: msp430自制的一个简单电压表，带1602显示，调试过的-Msp430 homemade a simple voltmeter, with 1602 show, commissioning
Platform: |
Size: 30720 |
Author: 张龙 |
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Description: 5v & 3.3v 1.5A PowerSupply With MC34063
Platform: |
Size: 566272 |
Author: Mohammad |
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